#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
#include "rtl.h"
#include "tm_p.h"
#include "expr.h"
#ifdef OBJCPLUS
#include "cp-tree.h"
#else
#include "c-tree.h"
#endif
#include "c-common.h"
#include "c-pragma.h"
#include "flags.h"
#include "langhooks.h"
#include "objc-act.h"
#include "input.h"
#include "except.h"
#include "function.h"
#include "output.h"
#include "toplev.h"
#include "ggc.h"
#include "varray.h"
#include "debug.h"
#include "target.h"
#include "diagnostic.h"
#include "cgraph.h"
#include "tree-iterator.h"
#include "libfuncs.h"
#include "hashtab.h"
#include "langhooks-def.h"
#define OBJC_VOID_AT_END void_list_node
#ifdef OBJCPLUS
#define OBJCP_REMAP_FUNCTIONS
#include "objcp-decl.h"
#endif
#ifndef OBJC_GEN_METHOD_LABEL
#define OBJC_GEN_METHOD_LABEL(BUF, IS_INST, CLASS_NAME, CAT_NAME, SEL_NAME, NUM) \
do { \
char *temp; \
sprintf ((BUF), "_%s_%s_%s_%s", \
((IS_INST) ? "i" : "c"), \
(CLASS_NAME), \
((CAT_NAME)? (CAT_NAME) : ""), \
(SEL_NAME)); \
for (temp = (BUF); *temp; temp++) \
if (*temp == ':') *temp = '_'; \
} while (0)
#endif
#ifndef OBJC_FORWARDING_STACK_OFFSET
#define OBJC_FORWARDING_STACK_OFFSET 0
#endif
#ifndef OBJC_FORWARDING_MIN_OFFSET
#define OBJC_FORWARDING_MIN_OFFSET 0
#endif
#include "obstack.h"
static struct obstack util_obstack;
char *util_firstobj;
#define OBJC_VERSION (flag_next_runtime ? 5 : 8)
#define PROTOCOL_VERSION 2
#define OBJC_ENCODE_INLINE_DEFS 0
#define OBJC_ENCODE_DONT_INLINE_DEFS 1
static void init_objc (void);
static void finish_objc (void);
static void synth_module_prologue (void);
static tree objc_build_constructor (tree, tree);
static void build_module_descriptor (void);
static void build_module_initializer_routine (void);
static tree init_module_descriptor (tree);
static tree build_objc_method_call (int, tree, tree, tree, tree);
static void generate_strings (void);
static tree get_proto_encoding (tree);
static void build_selector_translation_table (void);
static tree lookup_interface (tree);
static tree objc_add_static_instance (tree, tree);
static tree start_class (enum tree_code, tree, tree, tree);
static tree continue_class (tree);
static void finish_class (tree);
static void start_method_def (tree);
#ifdef OBJCPLUS
static void objc_start_function (tree, tree, tree, tree);
#else
static void objc_start_function (tree, tree, tree, struct c_arg_info *);
#endif
static tree start_protocol (enum tree_code, tree, tree);
static tree build_method_decl (enum tree_code, tree, tree, tree);
static tree objc_add_method (tree, tree, int);
static tree add_instance_variable (tree, int, tree);
static tree build_ivar_reference (tree);
static tree is_ivar (tree, tree);
static int is_private (tree);
static tree get_super_receiver (void);
static void build_objc_exception_stuff (void);
static void build_next_objc_exception_stuff (void);
static tree build_ivar_template (void);
static tree build_method_template (void);
static void build_private_template (tree);
static void build_class_template (void);
static void build_selector_template (void);
static void build_category_template (void);
static tree lookup_method_in_hash_lists (tree, int);
static void build_super_template (void);
static tree build_category_initializer (tree, tree, tree, tree, tree, tree);
static tree build_protocol_initializer (tree, tree, tree, tree, tree);
static void synth_forward_declarations (void);
static int ivar_list_length (tree);
static tree get_class_ivars (tree);
static void generate_ivar_lists (void);
static void generate_dispatch_tables (void);
static void generate_shared_structures (void);
static tree generate_protocol_list (tree);
static void build_protocol_reference (tree);
static tree build_keyword_selector (tree);
static const char *synth_id_with_class_suffix (const char *, tree);
static void generate_static_references (void);
static int check_methods_accessible (tree, tree, int);
static void encode_aggregate_within (tree, int, int, int, int);
static const char *objc_demangle (const char *);
hash *nst_method_hash_list = 0;
hash *cls_method_hash_list = 0;
static size_t hash_func (tree);
static void hash_init (void);
static void hash_enter (hash *, tree);
static hash hash_lookup (hash *, tree);
static void hash_add_attr (hash, tree);
static tree lookup_method (tree, tree);
static tree lookup_method_static (tree, tree, int);
static void add_method_to_hash_list (hash *, tree);
static tree add_class (tree);
static void add_category (tree, tree);
static inline tree lookup_category (tree, tree);
enum string_section
{
class_names,
meth_var_names,
meth_var_types
};
static tree add_objc_string (tree, enum string_section);
static tree get_objc_string_decl (tree, enum string_section);
static tree build_objc_string_decl (enum string_section);
static tree build_selector_reference_decl (void);
static void build_selector_table_decl (void);
static tree add_protocol (tree);
static tree lookup_protocol (tree);
static void check_protocol_recursively (tree, tree);
static tree lookup_and_install_protocols (tree);
static void encode_type_qualifiers (tree);
static void encode_pointer (tree, int, int);
static void encode_array (tree, int, int);
static void encode_aggregate (tree, int, int);
static void encode_next_bitfield (int);
static void encode_gnu_bitfield (int, tree, int);
static void encode_type (tree, int, int);
static void encode_field_decl (tree, int, int);
#ifdef OBJCPLUS
static void really_start_method (tree, tree);
#else
static void really_start_method (tree, struct c_arg_info *);
#endif
static int objc_types_are_equivalent (tree, tree);
static int comp_proto_with_proto (tree, tree);
static tree get_arg_type_list (tree, int, int);
static void objc_push_parm (tree);
#ifdef OBJCPLUS
static tree objc_get_parm_info (int);
#else
static struct c_arg_info *objc_get_parm_info (int);
#endif
static void synth_self_and_ucmd_args (void);
static void warn_with_method (const char *, int, tree);
static void error_with_ivar (const char *, tree);
static char *gen_type_name (tree);
static char *gen_type_name_0 (tree);
static char *gen_method_decl (tree);
static char *gen_declaration (tree);
static void dump_interface (FILE *, tree);
static tree lookup_method_in_protocol_list (tree, tree, int);
static tree lookup_protocol_in_reflist (tree, tree);
static tree start_var_decl (tree, const char *);
static void finish_var_decl (tree, tree);
static tree create_field_decl (tree, const char *);
static tree setup_string_decl (void);
static int check_string_class_template (void);
static tree my_build_string (int, const char *);
static void build_objc_symtab_template (void);
static tree init_def_list (tree);
static tree init_objc_symtab (tree);
static tree build_metadata_decl (const char *, tree);
static void forward_declare_categories (void);
static void generate_objc_symtab_decl (void);
static tree build_selector (tree);
static tree build_typed_selector_reference (tree, tree);
static tree build_selector_reference (tree);
static tree build_class_reference_decl (void);
static void add_class_reference (tree);
static void build_protocol_template (void);
static tree build_descriptor_table_initializer (tree, tree);
static tree build_method_prototype_list_template (tree, int);
static tree build_method_prototype_template (void);
static tree objc_method_parm_type (tree);
static int objc_encoded_type_size (tree);
static tree encode_method_prototype (tree);
static tree generate_descriptor_table (tree, const char *, int, tree, tree);
static void generate_method_descriptors (tree);
static void generate_protocol_references (tree);
static void generate_protocols (void);
static void check_ivars (tree, tree);
static tree build_ivar_list_template (tree, int);
static tree build_method_list_template (tree, int);
static tree build_ivar_list_initializer (tree, tree);
static tree generate_ivars_list (tree, const char *, int, tree);
static tree build_dispatch_table_initializer (tree, tree);
static tree generate_dispatch_table (tree, const char *, int, tree);
static tree build_shared_structure_initializer (tree, tree, tree, tree,
tree, int, tree, tree, tree);
static void generate_category (tree);
static tree adjust_type_for_id_default (tree);
static tree check_duplicates (hash, int, int);
static tree receiver_is_class_object (tree, int, int);
static int check_methods (tree, tree, int);
static int conforms_to_protocol (tree, tree);
static void check_protocol (tree, const char *, const char *);
static void check_protocols (tree, const char *, const char *);
static void generate_classref_translation_entry (tree);
static void handle_class_ref (tree);
static void generate_struct_by_value_array (void)
ATTRIBUTE_NORETURN;
static void mark_referenced_methods (void);
static void generate_objc_image_info (void);
#define OBJECT_TYPEDEF_NAME "id"
#define CLASS_TYPEDEF_NAME "Class"
#define TAG_OBJECT "objc_object"
#define TAG_CLASS "objc_class"
#define TAG_SUPER "objc_super"
#define TAG_SELECTOR "objc_selector"
#define UTAG_CLASS "_objc_class"
#define UTAG_IVAR "_objc_ivar"
#define UTAG_IVAR_LIST "_objc_ivar_list"
#define UTAG_METHOD "_objc_method"
#define UTAG_METHOD_LIST "_objc_method_list"
#define UTAG_CATEGORY "_objc_category"
#define UTAG_MODULE "_objc_module"
#define UTAG_SYMTAB "_objc_symtab"
#define UTAG_SUPER "_objc_super"
#define UTAG_SELECTOR "_objc_selector"
#define UTAG_PROTOCOL "_objc_protocol"
#define UTAG_METHOD_PROTOTYPE "_objc_method_prototype"
#define UTAG_METHOD_PROTOTYPE_LIST "_objc__method_prototype_list"
#define STRING_OBJECT_GLOBAL_FORMAT "_%sClassReference"
#define PROTOCOL_OBJECT_CLASS_NAME "Protocol"
static const char *TAG_GETCLASS;
static const char *TAG_GETMETACLASS;
static const char *TAG_MSGSEND;
static const char *TAG_MSGSENDSUPER;
static const char *TAG_MSGSEND_STRET;
static const char *TAG_MSGSENDSUPER_STRET;
static const char *default_constant_string_class_name;
#define CLS_FACTORY 0x0001L
#define CLS_META 0x0002L
#define OBJC_MODIFIER_STATIC 0x00000001
#define OBJC_MODIFIER_FINAL 0x00000002
#define OBJC_MODIFIER_PUBLIC 0x00000004
#define OBJC_MODIFIER_PRIVATE 0x00000008
#define OBJC_MODIFIER_PROTECTED 0x00000010
#define OBJC_MODIFIER_NATIVE 0x00000020
#define OBJC_MODIFIER_SYNCHRONIZED 0x00000040
#define OBJC_MODIFIER_ABSTRACT 0x00000080
#define OBJC_MODIFIER_VOLATILE 0x00000100
#define OBJC_MODIFIER_TRANSIENT 0x00000200
#define OBJC_MODIFIER_NONE_SPECIFIED 0x80000000
#define TAG_MSGSEND_NONNIL "objc_msgSendNonNil"
#define TAG_MSGSEND_NONNIL_STRET "objc_msgSendNonNil_stret"
#define TAG_EXCEPTIONEXTRACT "objc_exception_extract"
#define TAG_EXCEPTIONTRYENTER "objc_exception_try_enter"
#define TAG_EXCEPTIONTRYEXIT "objc_exception_try_exit"
#define TAG_EXCEPTIONMATCH "objc_exception_match"
#define TAG_EXCEPTIONTHROW "objc_exception_throw"
#define TAG_SYNCENTER "objc_sync_enter"
#define TAG_SYNCEXIT "objc_sync_exit"
#define TAG_SETJMP "_setjmp"
#define UTAG_EXCDATA "_objc_exception_data"
#define TAG_EXECCLASS "__objc_exec_class"
#define TAG_GNUINIT "__objc_gnu_init"
tree objc_global_trees[OCTI_MAX];
static void handle_impent (struct imp_entry *);
struct imp_entry *imp_list = 0;
int imp_count = 0;
int cat_count = 0;
enum tree_code objc_inherit_code;
int objc_public_flag;
static int method_slot = 0;
#define BUFSIZE 1024
static char *errbuf;
extern enum debug_info_type write_symbols;
extern const char *dump_base_name;
static int flag_typed_selectors;
struct string_descriptor GTY(())
{
tree literal;
tree constructor;
};
static GTY((param_is (struct string_descriptor))) htab_t string_htab;
static hashval_t string_hash (const void *);
static int string_eq (const void *, const void *);
FILE *gen_declaration_file;
static int generating_instance_variables = 0;
static void
generate_struct_by_value_array (void)
{
tree type;
tree field_decl, field_decl_chain;
int i, j;
int aggregate_in_mem[32];
int found = 0;
for (i = 1; i < 32; i++)
{
char buffer[5];
type = start_struct (RECORD_TYPE, NULL_TREE);
strcpy (buffer, "c1");
field_decl = create_field_decl (char_type_node,
buffer);
field_decl_chain = field_decl;
for (j = 1; j < i; j++)
{
sprintf (buffer, "c%d", j + 1);
field_decl = create_field_decl (char_type_node,
buffer);
chainon (field_decl_chain, field_decl);
}
finish_struct (type, field_decl_chain, NULL_TREE);
aggregate_in_mem[i] = aggregate_value_p (type, 0);
if (!aggregate_in_mem[i])
found = 1;
}
if (found)
{
for (i = 31; i >= 0; i--)
if (!aggregate_in_mem[i])
break;
printf ("#define OBJC_MAX_STRUCT_BY_VALUE %d\n\n", i);
printf ("static int struct_forward_array[] = {\n 0");
for (j = 1; j <= i; j++)
printf (", %d", aggregate_in_mem[j]);
printf ("\n};\n");
}
exit (0);
}
bool
objc_init (void)
{
#ifdef OBJCPLUS
if (cxx_init () == false)
#else
if (c_objc_common_init () == false)
#endif
return false;
#ifndef USE_MAPPED_LOCATION
input_line = 0;
#endif
if (flag_gen_declaration)
{
register char * const dumpname = concat (dump_base_name, ".decl", NULL);
gen_declaration_file = fopen (dumpname, "w");
if (gen_declaration_file == 0)
fatal_error ("can't open %s: %m", dumpname);
free (dumpname);
}
if (flag_next_runtime)
{
TAG_GETCLASS = "objc_getClass";
TAG_GETMETACLASS = "objc_getMetaClass";
TAG_MSGSEND = "objc_msgSend";
TAG_MSGSENDSUPER = "objc_msgSendSuper";
TAG_MSGSEND_STRET = "objc_msgSend_stret";
TAG_MSGSENDSUPER_STRET = "objc_msgSendSuper_stret";
default_constant_string_class_name = "NSConstantString";
}
else
{
TAG_GETCLASS = "objc_get_class";
TAG_GETMETACLASS = "objc_get_meta_class";
TAG_MSGSEND = "objc_msg_lookup";
TAG_MSGSENDSUPER = "objc_msg_lookup_super";
default_constant_string_class_name = "NXConstantString";
flag_typed_selectors = 1;
}
init_objc ();
if (print_struct_values)
generate_struct_by_value_array ();
return true;
}
void
objc_finish_file (void)
{
mark_referenced_methods ();
#ifdef OBJCPLUS
at_eof = 1;
instantiate_pending_templates (0);
#endif
if (!flag_syntax_only)
finish_objc ();
if (gen_declaration_file)
fclose (gen_declaration_file);
#ifdef OBJCPLUS
cp_finish_file ();
#endif
}
static tree
lookup_method_in_protocol_list (tree rproto_list, tree sel_name,
int is_class)
{
tree rproto, p;
tree fnd = 0;
for (rproto = rproto_list; rproto; rproto = TREE_CHAIN (rproto))
{
p = TREE_VALUE (rproto);
if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE)
{
if ((fnd = lookup_method (is_class
? PROTOCOL_CLS_METHODS (p)
: PROTOCOL_NST_METHODS (p), sel_name)))
;
else if (PROTOCOL_LIST (p))
fnd = lookup_method_in_protocol_list (PROTOCOL_LIST (p),
sel_name, is_class);
}
else
{
;
}
if (fnd)
return fnd;
}
return 0;
}
static tree
lookup_protocol_in_reflist (tree rproto_list, tree lproto)
{
tree rproto, p;
if (TREE_CODE (lproto) == PROTOCOL_INTERFACE_TYPE)
{
tree fnd = 0;
for (rproto = rproto_list; rproto; rproto = TREE_CHAIN (rproto))
{
p = TREE_VALUE (rproto);
if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE)
{
if (lproto == p)
fnd = lproto;
else if (PROTOCOL_LIST (p))
fnd = lookup_protocol_in_reflist (PROTOCOL_LIST (p), lproto);
}
if (fnd)
return fnd;
}
}
else
{
;
}
return 0;
}
void
objc_start_class_interface (tree class, tree super_class, tree protos)
{
objc_interface_context
= objc_ivar_context
= start_class (CLASS_INTERFACE_TYPE, class, super_class, protos);
objc_public_flag = 0;
}
void
objc_start_category_interface (tree class, tree categ, tree protos)
{
objc_interface_context
= start_class (CATEGORY_INTERFACE_TYPE, class, categ, protos);
objc_ivar_chain
= continue_class (objc_interface_context);
}
void
objc_start_protocol (tree name, tree protos)
{
objc_interface_context
= start_protocol (PROTOCOL_INTERFACE_TYPE, name, protos);
}
void
objc_continue_interface (void)
{
objc_ivar_chain
= continue_class (objc_interface_context);
}
void
objc_finish_interface (void)
{
finish_class (objc_interface_context);
objc_interface_context = NULL_TREE;
}
void
objc_start_class_implementation (tree class, tree super_class)
{
objc_implementation_context
= objc_ivar_context
= start_class (CLASS_IMPLEMENTATION_TYPE, class, super_class, NULL_TREE);
objc_public_flag = 0;
}
void
objc_start_category_implementation (tree class, tree categ)
{
objc_implementation_context
= start_class (CATEGORY_IMPLEMENTATION_TYPE, class, categ, NULL_TREE);
objc_ivar_chain
= continue_class (objc_implementation_context);
}
void
objc_continue_implementation (void)
{
objc_ivar_chain
= continue_class (objc_implementation_context);
}
void
objc_finish_implementation (void)
{
if (objc_implementation_context)
{
finish_class (objc_implementation_context);
objc_ivar_chain = NULL_TREE;
objc_implementation_context = NULL_TREE;
}
else
warning ("%<@end%> must appear in an @implementation context");
}
void
objc_set_visibility (int visibility)
{
objc_public_flag = visibility;
}
void
objc_set_method_type (enum tree_code type)
{
objc_inherit_code = (type == PLUS_EXPR
? CLASS_METHOD_DECL
: INSTANCE_METHOD_DECL);
}
tree
objc_build_method_signature (tree rettype, tree selector, tree optparms)
{
return build_method_decl (objc_inherit_code, rettype, selector, optparms);
}
void
objc_add_method_declaration (tree decl)
{
if (!objc_interface_context)
fatal_error ("method declaration not in @interface context");
objc_add_method (objc_interface_context,
decl,
objc_inherit_code == CLASS_METHOD_DECL);
}
void
objc_start_method_definition (tree decl)
{
if (!objc_implementation_context)
fatal_error ("method definition not in @implementation context");
objc_add_method (objc_implementation_context,
decl,
objc_inherit_code == CLASS_METHOD_DECL);
start_method_def (decl);
}
void
objc_add_instance_variable (tree decl)
{
(void) add_instance_variable (objc_ivar_context,
objc_public_flag,
decl);
}
int
objc_is_reserved_word (tree ident)
{
unsigned char code = C_RID_CODE (ident);
return (OBJC_IS_AT_KEYWORD (code)
#ifdef OBJCPLUS
|| code == RID_CLASS || code == RID_PUBLIC
|| code == RID_PROTECTED || code == RID_PRIVATE
|| code == RID_TRY || code == RID_THROW || code == RID_CATCH
#endif
);
}
static bool
objc_is_object_id (tree type)
{
return OBJC_TYPE_NAME (type) == objc_object_id;
}
static bool
objc_is_class_id (tree type)
{
return OBJC_TYPE_NAME (type) == objc_class_id;
}
int
objc_types_compatible_p (tree type1, tree type2)
{
if (objc_is_object_ptr (type1) || objc_is_object_ptr (type2)
|| objc_is_class_name (type1) || objc_is_class_name (type2))
{
return lhd_types_compatible_p (type1, type2);
}
else
{
#ifdef OBJCPLUS
return cxx_types_compatible_p (type1, type2);
#else
return c_types_compatible_p (type1, type2);
#endif
}
}
int
objc_comptypes (tree lhs, tree rhs, int reflexive)
{
if (TREE_CODE (lhs) == POINTER_TYPE
&& TREE_CODE (TREE_TYPE (lhs)) == RECORD_TYPE
&& TREE_CODE (rhs) == POINTER_TYPE
&& TREE_CODE (TREE_TYPE (rhs)) == RECORD_TYPE)
{
int lhs_is_proto = IS_PROTOCOL_QUALIFIED_UNTYPED (lhs);
int rhs_is_proto = IS_PROTOCOL_QUALIFIED_UNTYPED (rhs);
if (lhs_is_proto)
{
tree lproto, lproto_list = TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (lhs));
tree rproto, rproto_list;
tree p;
if (rhs_is_proto)
{
if (IS_ID (lhs) != IS_ID (rhs))
return 0;
rproto_list = TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rhs));
if (!reflexive)
{
for (lproto = lproto_list; lproto;
lproto = TREE_CHAIN (lproto))
{
p = TREE_VALUE (lproto);
rproto = lookup_protocol_in_reflist (rproto_list, p);
if (!rproto)
warning
("object does not conform to the %qs protocol",
IDENTIFIER_POINTER (PROTOCOL_NAME (p)));
}
return 1;
}
else
{
for (lproto = lproto_list; lproto;
lproto = TREE_CHAIN (lproto))
{
p = TREE_VALUE (lproto);
rproto = lookup_protocol_in_reflist (rproto_list, p);
if (!rproto)
{
for (rproto = rproto_list; rproto;
rproto = TREE_CHAIN (rproto))
{
p = TREE_VALUE (rproto);
lproto = lookup_protocol_in_reflist (lproto_list,
p);
if (!lproto)
{
return 0;
}
}
return 1;
}
}
return 1;
}
}
else if (TYPED_OBJECT (TREE_TYPE (rhs)))
{
tree rname = OBJC_TYPE_NAME (TREE_TYPE (rhs));
tree rinter;
if (IS_CLASS (lhs))
return 0;
for (lproto = lproto_list; lproto; lproto = TREE_CHAIN (lproto))
{
p = TREE_VALUE (lproto);
rproto = 0;
rinter = lookup_interface (rname);
while (rinter && !rproto)
{
tree cat;
rproto_list = CLASS_PROTOCOL_LIST (rinter);
rproto = lookup_protocol_in_reflist (rproto_list, p);
if (!rproto && TYPE_HAS_OBJC_INFO (TREE_TYPE (rhs)))
{
rproto_list = TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rhs));
rproto = lookup_protocol_in_reflist (rproto_list, p);
}
cat = CLASS_CATEGORY_LIST (rinter);
while (cat && !rproto)
{
rproto_list = CLASS_PROTOCOL_LIST (cat);
rproto = lookup_protocol_in_reflist (rproto_list, p);
cat = CLASS_CATEGORY_LIST (cat);
}
rinter = lookup_interface (CLASS_SUPER_NAME (rinter));
}
if (!rproto)
warning ("class %qs does not implement the %qs protocol",
IDENTIFIER_POINTER (OBJC_TYPE_NAME (TREE_TYPE (rhs))),
IDENTIFIER_POINTER (PROTOCOL_NAME (p)));
}
return 1;
}
else if (objc_is_object_id (TREE_TYPE (rhs)))
{
return 1;
}
else if (objc_is_class_id (TREE_TYPE (rhs)))
{
return IS_CLASS (lhs);
}
return -1;
}
else if (rhs_is_proto)
{
if (TYPED_OBJECT (TREE_TYPE (lhs)))
{
if (IS_CLASS (rhs))
return 0;
if (reflexive)
{
tree rname = OBJC_TYPE_NAME (TREE_TYPE (lhs));
tree rinter;
tree rproto, rproto_list = TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rhs));
for (rproto = rproto_list; rproto;
rproto = TREE_CHAIN (rproto))
{
tree p = TREE_VALUE (rproto);
tree lproto = 0;
rinter = lookup_interface (rname);
while (rinter && !lproto)
{
tree cat;
tree lproto_list = CLASS_PROTOCOL_LIST (rinter);
lproto = lookup_protocol_in_reflist (lproto_list, p);
if (!lproto && TYPE_HAS_OBJC_INFO (TREE_TYPE (lhs)))
{
lproto_list = TYPE_OBJC_PROTOCOL_LIST
(TREE_TYPE (lhs));
lproto = lookup_protocol_in_reflist
(lproto_list, p);
}
cat = CLASS_CATEGORY_LIST (rinter);
while (cat && !lproto)
{
lproto_list = CLASS_PROTOCOL_LIST (cat);
lproto = lookup_protocol_in_reflist (lproto_list,
p);
cat = CLASS_CATEGORY_LIST (cat);
}
rinter = lookup_interface (CLASS_SUPER_NAME
(rinter));
}
if (!lproto)
warning ("class %qs does not implement the %qs protocol",
IDENTIFIER_POINTER (OBJC_TYPE_NAME
(TREE_TYPE (lhs))),
IDENTIFIER_POINTER (PROTOCOL_NAME (p)));
}
return 1;
}
else
return 0;
}
else if (objc_is_object_id (TREE_TYPE (lhs)))
{
return 1;
}
else if (objc_is_class_id (TREE_TYPE (lhs)))
{
return IS_CLASS (rhs);
}
else
{
return -1;
}
}
else
{
lhs = TREE_TYPE (lhs);
rhs = TREE_TYPE (rhs);
}
}
if (TREE_CODE (lhs) != RECORD_TYPE || TREE_CODE (rhs) != RECORD_TYPE)
{
return -1;
}
if ((objc_is_object_id (lhs) && TYPED_OBJECT (rhs))
|| (objc_is_object_id (rhs) && TYPED_OBJECT (lhs)))
return 1;
else if ((objc_is_object_id (lhs) && objc_is_class_id (rhs))
|| (objc_is_class_id (lhs) && objc_is_object_id (rhs)))
return 1;
else if ((OBJC_TYPE_NAME (lhs) == objc_class_id && TYPED_OBJECT (rhs))
|| (OBJC_TYPE_NAME (rhs) == objc_class_id && TYPED_OBJECT (lhs)))
return 0;
else if (TYPED_OBJECT (lhs) && TYPED_OBJECT (rhs))
{
tree lname = OBJC_TYPE_NAME (lhs);
tree rname = OBJC_TYPE_NAME (rhs);
tree inter;
if (lname == rname)
return 1;
for (inter = lookup_interface (rname); inter;
inter = lookup_interface (CLASS_SUPER_NAME (inter)))
if (lname == CLASS_SUPER_NAME (inter))
return 1;
if (reflexive)
for (inter = lookup_interface (lname); inter;
inter = lookup_interface (CLASS_SUPER_NAME (inter)))
if (rname == CLASS_SUPER_NAME (inter))
return 1;
return 0;
}
else
return -1;
}
void
objc_check_decl (tree decl)
{
tree type = TREE_TYPE (decl);
if (TREE_CODE (type) != RECORD_TYPE)
return;
if (OBJC_TYPE_NAME (type) && (type = objc_is_class_name (OBJC_TYPE_NAME (type))))
error ("statically allocated instance of Objective-C class %qs",
IDENTIFIER_POINTER (type));
}
tree
objc_get_protocol_qualified_type (tree interface, tree protocols)
{
tree type = (interface ? objc_is_id (interface) : objc_object_type);
bool is_ptr = (type != NULL_TREE);
if (!is_ptr)
{
type = objc_is_class_name (interface);
if (type)
type = xref_tag (RECORD_TYPE, type);
else
return interface;
}
if (protocols)
{
type = build_variant_type_copy (type);
if (is_ptr)
{
TREE_TYPE (type) = build_variant_type_copy (TREE_TYPE (type));
TYPE_POINTER_TO (TREE_TYPE (type)) = type;
type = TREE_TYPE (type);
}
DUP_TYPE_OBJC_INFO (type, TYPE_MAIN_VARIANT (type));
TYPE_OBJC_PROTOCOL_LIST (type) = lookup_and_install_protocols (protocols);
if (is_ptr)
type = TYPE_POINTER_TO (type);
else
TYPE_OBJC_INTERFACE (type)
= TYPE_OBJC_INTERFACE (TYPE_MAIN_VARIANT (type));
}
return type;
}
static void
check_protocol_recursively (tree proto, tree list)
{
tree p;
for (p = list; p; p = TREE_CHAIN (p))
{
tree pp = TREE_VALUE (p);
if (TREE_CODE (pp) == IDENTIFIER_NODE)
pp = lookup_protocol (pp);
if (pp == proto)
fatal_error ("protocol %qs has circular dependency",
IDENTIFIER_POINTER (PROTOCOL_NAME (pp)));
if (pp)
check_protocol_recursively (proto, PROTOCOL_LIST (pp));
}
}
static tree
lookup_and_install_protocols (tree protocols)
{
tree proto;
tree return_value = NULL_TREE;
for (proto = protocols; proto; proto = TREE_CHAIN (proto))
{
tree ident = TREE_VALUE (proto);
tree p = lookup_protocol (ident);
if (!p)
error ("cannot find protocol declaration for %qs",
IDENTIFIER_POINTER (ident));
else
return_value = chainon (return_value,
build_tree_list (NULL_TREE, p));
}
return return_value;
}
static tree
create_field_decl (tree type, const char *name)
{
return build_decl (FIELD_DECL, get_identifier (name), type);
}
static tree
start_var_decl (tree type, const char *name)
{
tree var = build_decl (VAR_DECL, get_identifier (name), type);
TREE_STATIC (var) = 1;
DECL_INITIAL (var) = error_mark_node;
DECL_IGNORED_P (var) = 1;
DECL_ARTIFICIAL (var) = 1;
DECL_CONTEXT (var) = NULL_TREE;
#ifdef OBJCPLUS
DECL_THIS_STATIC (var) = 1;
#endif
return var;
}
static void
finish_var_decl (tree var, tree initializer)
{
finish_decl (var, initializer, NULL_TREE);
mark_decl_referenced (var);
TREE_USED (var) = 1;
}
static tree
setup_string_decl (void)
{
char *name;
size_t length;
length = strlen (STRING_OBJECT_GLOBAL_FORMAT)
+ strlen (constant_string_class_name);
name = xmalloc (length);
sprintf (name, STRING_OBJECT_GLOBAL_FORMAT,
constant_string_class_name);
constant_string_global_id = get_identifier (name);
string_class_decl = lookup_name (constant_string_global_id);
return string_class_decl;
}
static void
synth_module_prologue (void)
{
tree type;
enum debug_info_type save_write_symbols = write_symbols;
const struct gcc_debug_hooks *const save_hooks = debug_hooks;
write_symbols = NO_DEBUG;
debug_hooks = &do_nothing_debug_hooks;
#ifdef OBJCPLUS
push_lang_context (lang_name_c);
#endif
objc_object_id = get_identifier (TAG_OBJECT);
objc_class_id = get_identifier (TAG_CLASS);
objc_object_reference = xref_tag (RECORD_TYPE, objc_object_id);
objc_class_reference = xref_tag (RECORD_TYPE, objc_class_id);
objc_object_type = build_pointer_type (objc_object_reference);
objc_class_type = build_pointer_type (objc_class_reference);
objc_object_name = get_identifier (OBJECT_TYPEDEF_NAME);
objc_class_name = get_identifier (CLASS_TYPEDEF_NAME);
type = lang_hooks.decls.pushdecl (build_decl (TYPE_DECL,
objc_object_name,
objc_object_type));
DECL_IN_SYSTEM_HEADER (type) = 1;
type = lang_hooks.decls.pushdecl (build_decl (TYPE_DECL,
objc_class_name,
objc_class_type));
DECL_IN_SYSTEM_HEADER (type) = 1;
type = get_identifier (PROTOCOL_OBJECT_CLASS_NAME);
objc_declare_class (tree_cons (NULL_TREE, type, NULL_TREE));
objc_protocol_type = build_pointer_type (xref_tag (RECORD_TYPE,
type));
if (flag_next_runtime)
objc_selector_type
= build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier (TAG_SELECTOR)));
else
objc_selector_type
= build_pointer_type
(build_qualified_type (xref_tag (RECORD_TYPE,
get_identifier (TAG_SELECTOR)),
TYPE_QUAL_CONST));
objc_super_type = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier (TAG_SUPER)));
if (flag_next_runtime)
{
type
= build_function_type (objc_object_type,
tree_cons (NULL_TREE, objc_object_type,
tree_cons (NULL_TREE, objc_selector_type,
NULL_TREE)));
umsg_decl = builtin_function (TAG_MSGSEND,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
umsg_nonnil_decl = builtin_function (TAG_MSGSEND_NONNIL,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
umsg_stret_decl = builtin_function (TAG_MSGSEND_STRET,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
umsg_nonnil_stret_decl = builtin_function (TAG_MSGSEND_NONNIL_STRET,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
type
= build_function_type (objc_object_type,
tree_cons (NULL_TREE, objc_super_type,
tree_cons (NULL_TREE, objc_selector_type,
NULL_TREE)));
umsg_super_decl = builtin_function (TAG_MSGSENDSUPER,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
umsg_super_stret_decl = builtin_function (TAG_MSGSENDSUPER_STRET,
type, 0, NOT_BUILT_IN, 0,
NULL_TREE);
}
else
{
tree IMP_type
= build_pointer_type
(build_function_type (objc_object_type,
tree_cons (NULL_TREE, objc_object_type,
tree_cons (NULL_TREE, objc_selector_type,
NULL_TREE))));
type
= build_function_type (IMP_type,
tree_cons (NULL_TREE, objc_object_type,
tree_cons (NULL_TREE, objc_selector_type,
OBJC_VOID_AT_END)));
umsg_decl = builtin_function (TAG_MSGSEND,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
type
= build_function_type (IMP_type,
tree_cons (NULL_TREE, objc_super_type,
tree_cons (NULL_TREE, objc_selector_type,
OBJC_VOID_AT_END)));
umsg_super_decl = builtin_function (TAG_MSGSENDSUPER,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
type
= build_function_type (void_type_node,
tree_cons (NULL_TREE, ptr_type_node,
OBJC_VOID_AT_END));
execclass_decl = builtin_function (TAG_EXECCLASS,
type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
}
type = build_function_type (objc_object_type,
tree_cons (NULL_TREE,
const_string_type_node,
OBJC_VOID_AT_END));
objc_get_class_decl
= builtin_function (TAG_GETCLASS, type, 0, NOT_BUILT_IN,
NULL, NULL_TREE);
objc_get_meta_class_decl
= builtin_function (TAG_GETMETACLASS, type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
build_class_template ();
build_super_template ();
build_protocol_template ();
build_category_template ();
build_objc_exception_stuff ();
if (flag_next_runtime)
build_next_objc_exception_stuff ();
if (! flag_next_runtime)
build_selector_table_decl ();
if (!constant_string_class_name)
constant_string_class_name = default_constant_string_class_name;
constant_string_id = get_identifier (constant_string_class_name);
objc_declare_class (tree_cons (NULL_TREE, constant_string_id, NULL_TREE));
self_id = get_identifier ("self");
ucmd_id = get_identifier ("_cmd");
#ifndef OBJCPLUS
unused_list = build_tree_list (get_identifier ("__unused__"), NULL_TREE);
#endif
#ifdef OBJCPLUS
pop_lang_context ();
#endif
write_symbols = save_write_symbols;
debug_hooks = save_hooks;
}
static int
check_string_class_template (void)
{
tree field_decl = TYPE_FIELDS (constant_string_type);
#define AT_LEAST_AS_LARGE_AS(F, T) \
(F && TREE_CODE (F) == FIELD_DECL \
&& (TREE_INT_CST_LOW (DECL_SIZE (F)) \
>= TREE_INT_CST_LOW (TYPE_SIZE (T))))
if (!AT_LEAST_AS_LARGE_AS (field_decl, ptr_type_node))
return 0;
field_decl = TREE_CHAIN (field_decl);
if (!AT_LEAST_AS_LARGE_AS (field_decl, ptr_type_node))
return 0;
field_decl = TREE_CHAIN (field_decl);
return AT_LEAST_AS_LARGE_AS (field_decl, unsigned_type_node);
#undef AT_LEAST_AS_LARGE_AS
}
static GTY(()) int string_layout_checked;
static tree
my_build_string (int len, const char *str)
{
return fix_string_type (build_string (len, str));
}
static hashval_t
string_hash (const void *ptr)
{
tree str = ((struct string_descriptor *)ptr)->literal;
const unsigned char *p = (const unsigned char *) TREE_STRING_POINTER (str);
int i, len = TREE_STRING_LENGTH (str);
hashval_t h = len;
for (i = 0; i < len; i++)
h = ((h * 613) + p[i]);
return h;
}
static int
string_eq (const void *ptr1, const void *ptr2)
{
tree str1 = ((struct string_descriptor *)ptr1)->literal;
tree str2 = ((struct string_descriptor *)ptr2)->literal;
int len1 = TREE_STRING_LENGTH (str1);
return (len1 == TREE_STRING_LENGTH (str2)
&& !memcmp (TREE_STRING_POINTER (str1), TREE_STRING_POINTER (str2),
len1));
}
tree
objc_build_string_object (tree string)
{
tree initlist, constructor, constant_string_class;
int length;
tree fields, addr;
struct string_descriptor *desc, key;
void **loc;
string = fix_string_type (string);
TREE_SET_CODE (string, STRING_CST);
length = TREE_STRING_LENGTH (string) - 1;
if (!string_layout_checked)
{
string_layout_checked = -1;
constant_string_class = lookup_interface (constant_string_id);
if (!constant_string_class
|| !(constant_string_type
= CLASS_STATIC_TEMPLATE (constant_string_class)))
error ("cannot find interface declaration for %qs",
IDENTIFIER_POINTER (constant_string_id));
else if (!check_string_class_template ())
error ("interface %qs does not have valid constant string layout",
IDENTIFIER_POINTER (constant_string_id));
else if (flag_next_runtime && !setup_string_decl ())
error ("cannot find reference tag for class %qs",
IDENTIFIER_POINTER (constant_string_id));
else
{
string_layout_checked = 1;
add_class_reference (constant_string_id);
}
}
if (string_layout_checked == -1)
return error_mark_node;
key.literal = string;
loc = htab_find_slot (string_htab, &key, INSERT);
desc = *loc;
if (!desc)
{
tree var;
*loc = desc = ggc_alloc (sizeof (*desc));
desc->literal = string;
fields = TYPE_FIELDS (constant_string_type);
initlist
= build_tree_list (fields,
flag_next_runtime
? build_unary_op (ADDR_EXPR, string_class_decl, 0)
: build_int_cst (NULL_TREE, 0));
fields = TREE_CHAIN (fields);
initlist = tree_cons (fields, build_unary_op (ADDR_EXPR, string, 1),
initlist);
fields = TREE_CHAIN (fields);
initlist = tree_cons (fields, build_int_cst (NULL_TREE, length),
initlist);
constructor = objc_build_constructor (constant_string_type,
nreverse (initlist));
TREE_INVARIANT (constructor) = true;
if (!flag_next_runtime)
constructor
= objc_add_static_instance (constructor, constant_string_type);
else
{
var = build_decl (CONST_DECL, NULL, TREE_TYPE (constructor));
DECL_INITIAL (var) = constructor;
TREE_STATIC (var) = 1;
pushdecl_top_level (var);
constructor = var;
}
desc->constructor = constructor;
}
addr = build_unary_op (ADDR_EXPR, desc->constructor, 1);
return addr;
}
static GTY(()) int num_static_inst;
static tree
objc_add_static_instance (tree constructor, tree class_decl)
{
tree *chain, decl;
char buf[256];
for (chain = &objc_static_instances;
*chain && TREE_VALUE (*chain) != class_decl;
chain = &TREE_CHAIN (*chain));
if (!*chain)
{
*chain = tree_cons (NULL_TREE, class_decl, NULL_TREE);
add_objc_string (OBJC_TYPE_NAME (class_decl), class_names);
}
sprintf (buf, "_OBJC_INSTANCE_%d", num_static_inst++);
decl = build_decl (VAR_DECL, get_identifier (buf), class_decl);
DECL_COMMON (decl) = 1;
TREE_STATIC (decl) = 1;
DECL_ARTIFICIAL (decl) = 1;
DECL_INITIAL (decl) = constructor;
DECL_DEFER_OUTPUT (decl) = 1;
pushdecl_top_level (decl);
rest_of_decl_compilation (decl, 1, 0);
TREE_PURPOSE (*chain) = tree_cons (NULL_TREE, decl, TREE_PURPOSE (*chain));
return decl;
}
static tree
objc_build_constructor (tree type, tree elts)
{
tree constructor = build_constructor (type, elts);
TREE_CONSTANT (constructor) = 1;
TREE_STATIC (constructor) = 1;
TREE_READONLY (constructor) = 1;
#ifdef OBJCPLUS
if (!TREE_PURPOSE (elts))
TREE_TYPE (constructor) = NULL_TREE;
TREE_HAS_CONSTRUCTOR (constructor) = 1;
#endif
return constructor;
}
static void
build_objc_symtab_template (void)
{
tree field_decl, field_decl_chain;
objc_symtab_template
= start_struct (RECORD_TYPE, get_identifier (UTAG_SYMTAB));
field_decl = create_field_decl (long_integer_type_node, "sel_ref_cnt");
field_decl_chain = field_decl;
field_decl = create_field_decl (build_pointer_type (objc_selector_type),
"refs");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (short_integer_type_node, "cls_def_cnt");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (short_integer_type_node,
"cat_def_cnt");
chainon (field_decl_chain, field_decl);
if (imp_count || cat_count || !flag_next_runtime)
{
int index = imp_count + cat_count
+ (flag_next_runtime? -1: 0);
field_decl = create_field_decl
(build_array_type
(ptr_type_node,
build_index_type (build_int_cst (NULL_TREE, index))),
"defs");
chainon (field_decl_chain, field_decl);
}
finish_struct (objc_symtab_template, field_decl_chain, NULL_TREE);
}
static tree
init_def_list (tree type)
{
tree expr, initlist = NULL_TREE;
struct imp_entry *impent;
if (imp_count)
for (impent = imp_list; impent; impent = impent->next)
{
if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE)
{
expr = build_unary_op (ADDR_EXPR, impent->class_decl, 0);
initlist = tree_cons (NULL_TREE, expr, initlist);
}
}
if (cat_count)
for (impent = imp_list; impent; impent = impent->next)
{
if (TREE_CODE (impent->imp_context) == CATEGORY_IMPLEMENTATION_TYPE)
{
expr = build_unary_op (ADDR_EXPR, impent->class_decl, 0);
initlist = tree_cons (NULL_TREE, expr, initlist);
}
}
if (!flag_next_runtime)
{
tree expr;
if (static_instances_decl)
expr = build_unary_op (ADDR_EXPR, static_instances_decl, 0);
else
expr = build_int_cst (NULL_TREE, 0);
initlist = tree_cons (NULL_TREE, expr, initlist);
}
return objc_build_constructor (type, nreverse (initlist));
}
static tree
init_objc_symtab (tree type)
{
tree initlist;
initlist = build_tree_list (NULL_TREE,
build_int_cst (long_integer_type_node, 0));
if (flag_next_runtime || ! sel_ref_chain)
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
else
initlist
= tree_cons (NULL_TREE,
convert (build_pointer_type (objc_selector_type),
build_unary_op (ADDR_EXPR,
UOBJC_SELECTOR_TABLE_decl, 1)),
initlist);
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, imp_count), initlist);
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, cat_count), initlist);
if (imp_count || cat_count || !flag_next_runtime)
{
tree field = TYPE_FIELDS (type);
field = TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (field))));
initlist = tree_cons (NULL_TREE, init_def_list (TREE_TYPE (field)),
initlist);
}
return objc_build_constructor (type, nreverse (initlist));
}
static tree
build_metadata_decl (const char *name, tree type)
{
tree decl;
decl = start_var_decl (type, synth_id_with_class_suffix
(name,
objc_implementation_context));
return decl;
}
static void
forward_declare_categories (void)
{
struct imp_entry *impent;
tree sav = objc_implementation_context;
for (impent = imp_list; impent; impent = impent->next)
{
if (TREE_CODE (impent->imp_context) == CATEGORY_IMPLEMENTATION_TYPE)
{
objc_implementation_context = impent->imp_context;
impent->class_decl = build_metadata_decl ("_OBJC_CATEGORY",
objc_category_template);
}
}
objc_implementation_context = sav;
}
static void
generate_objc_symtab_decl (void)
{
if (cat_count)
forward_declare_categories ();
build_objc_symtab_template ();
UOBJC_SYMBOLS_decl = start_var_decl (objc_symtab_template, "_OBJC_SYMBOLS");
finish_var_decl (UOBJC_SYMBOLS_decl,
init_objc_symtab (TREE_TYPE (UOBJC_SYMBOLS_decl)));
}
static tree
init_module_descriptor (tree type)
{
tree initlist, expr;
expr = build_int_cst (long_integer_type_node, OBJC_VERSION);
initlist = build_tree_list (NULL_TREE, expr);
expr = convert (long_integer_type_node,
size_in_bytes (objc_module_template));
initlist = tree_cons (NULL_TREE, expr, initlist);
expr = add_objc_string (get_identifier (input_filename), class_names);
initlist = tree_cons (NULL_TREE, expr, initlist);
if (UOBJC_SYMBOLS_decl)
expr = build_unary_op (ADDR_EXPR, UOBJC_SYMBOLS_decl, 0);
else
expr = build_int_cst (NULL_TREE, 0);
initlist = tree_cons (NULL_TREE, expr, initlist);
return objc_build_constructor (type, nreverse (initlist));
}
static void
build_module_descriptor (void)
{
tree field_decl, field_decl_chain;
#ifdef OBJCPLUS
push_lang_context (lang_name_c);
#endif
objc_module_template
= start_struct (RECORD_TYPE, get_identifier (UTAG_MODULE));
field_decl = create_field_decl (long_integer_type_node, "version");
field_decl_chain = field_decl;
field_decl = create_field_decl (long_integer_type_node, "size");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (string_type_node, "name");
chainon (field_decl_chain, field_decl);
field_decl
= create_field_decl (build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier (UTAG_SYMTAB))),
"symtab");
chainon (field_decl_chain, field_decl);
finish_struct (objc_module_template, field_decl_chain, NULL_TREE);
UOBJC_MODULES_decl = start_var_decl (objc_module_template, "_OBJC_MODULES");
finish_var_decl (UOBJC_MODULES_decl,
init_module_descriptor (TREE_TYPE (UOBJC_MODULES_decl)));
#ifdef OBJCPLUS
pop_lang_context ();
#endif
}
static void
build_module_initializer_routine (void)
{
tree body;
#ifdef OBJCPLUS
push_lang_context (lang_name_c);
#endif
objc_push_parm (build_decl (PARM_DECL, NULL_TREE, void_type_node));
objc_start_function (get_identifier (TAG_GNUINIT),
build_function_type (void_type_node,
OBJC_VOID_AT_END),
NULL_TREE, objc_get_parm_info (0));
body = c_begin_compound_stmt (true);
add_stmt (build_function_call
(execclass_decl,
build_tree_list
(NULL_TREE,
build_unary_op (ADDR_EXPR,
UOBJC_MODULES_decl, 0))));
add_stmt (c_end_compound_stmt (body, true));
TREE_PUBLIC (current_function_decl) = 0;
#ifndef OBJCPLUS
DECL_STATIC_CONSTRUCTOR (current_function_decl) = 1;
#endif
GNU_INIT_decl = current_function_decl;
finish_function ();
#ifdef OBJCPLUS
pop_lang_context ();
#endif
}
#ifdef OBJCPLUS
int
objc_static_init_needed_p (void)
{
return (GNU_INIT_decl != NULL_TREE);
}
tree
objc_generate_static_init_call (tree ctors ATTRIBUTE_UNUSED)
{
add_stmt (build_stmt (EXPR_STMT,
build_function_call (GNU_INIT_decl, NULL_TREE)));
return ctors;
}
#endif
static tree
get_objc_string_decl (tree ident, enum string_section section)
{
tree chain;
if (section == class_names)
chain = class_names_chain;
else if (section == meth_var_names)
chain = meth_var_names_chain;
else if (section == meth_var_types)
chain = meth_var_types_chain;
else
abort ();
for (; chain != 0; chain = TREE_CHAIN (chain))
if (TREE_VALUE (chain) == ident)
return (TREE_PURPOSE (chain));
abort ();
return NULL_TREE;
}
static void
generate_static_references (void)
{
tree decls = NULL_TREE, expr = NULL_TREE;
tree class_name, class, decl, initlist;
tree cl_chain, in_chain, type
= build_array_type (build_pointer_type (void_type_node), NULL_TREE);
int num_inst, num_class;
char buf[256];
if (flag_next_runtime)
abort ();
for (cl_chain = objc_static_instances, num_class = 0;
cl_chain; cl_chain = TREE_CHAIN (cl_chain), num_class++)
{
for (num_inst = 0, in_chain = TREE_PURPOSE (cl_chain);
in_chain; num_inst++, in_chain = TREE_CHAIN (in_chain));
sprintf (buf, "_OBJC_STATIC_INSTANCES_%d", num_class);
decl = start_var_decl (type, buf);
class = TREE_VALUE (cl_chain);
class_name = get_objc_string_decl (OBJC_TYPE_NAME (class), class_names);
initlist = build_tree_list (NULL_TREE,
build_unary_op (ADDR_EXPR, class_name, 1));
for (in_chain = TREE_PURPOSE (cl_chain);
in_chain; in_chain = TREE_CHAIN (in_chain))
{
expr = build_unary_op (ADDR_EXPR, TREE_VALUE (in_chain), 1);
initlist = tree_cons (NULL_TREE, expr, initlist);
}
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
expr = objc_build_constructor (TREE_TYPE (decl), nreverse (initlist));
finish_var_decl (decl, expr);
decls
= tree_cons (NULL_TREE, build_unary_op (ADDR_EXPR, decl, 1), decls);
}
decls = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), decls);
expr = objc_build_constructor (type, nreverse (decls));
static_instances_decl = start_var_decl (type, "_OBJC_STATIC_INSTANCES");
finish_var_decl (static_instances_decl, expr);
}
static void
generate_strings (void)
{
tree chain, string_expr;
tree string, decl, type;
for (chain = class_names_chain; chain; chain = TREE_CHAIN (chain))
{
string = TREE_VALUE (chain);
decl = TREE_PURPOSE (chain);
type = build_array_type
(char_type_node,
build_index_type
(build_int_cst (NULL_TREE,
IDENTIFIER_LENGTH (string))));
decl = start_var_decl (type, IDENTIFIER_POINTER (DECL_NAME (decl)));
string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1,
IDENTIFIER_POINTER (string));
finish_var_decl (decl, string_expr);
}
for (chain = meth_var_names_chain; chain; chain = TREE_CHAIN (chain))
{
string = TREE_VALUE (chain);
decl = TREE_PURPOSE (chain);
type = build_array_type
(char_type_node,
build_index_type
(build_int_cst (NULL_TREE,
IDENTIFIER_LENGTH (string))));
decl = start_var_decl (type, IDENTIFIER_POINTER (DECL_NAME (decl)));
string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1,
IDENTIFIER_POINTER (string));
finish_var_decl (decl, string_expr);
}
for (chain = meth_var_types_chain; chain; chain = TREE_CHAIN (chain))
{
string = TREE_VALUE (chain);
decl = TREE_PURPOSE (chain);
type = build_array_type
(char_type_node,
build_index_type
(build_int_cst (NULL_TREE,
IDENTIFIER_LENGTH (string))));
decl = start_var_decl (type, IDENTIFIER_POINTER (DECL_NAME (decl)));
string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1,
IDENTIFIER_POINTER (string));
finish_var_decl (decl, string_expr);
}
}
static GTY(()) int selector_reference_idx;
static tree
build_selector_reference_decl (void)
{
tree decl;
char buf[256];
sprintf (buf, "_OBJC_SELECTOR_REFERENCES_%d", selector_reference_idx++);
decl = start_var_decl (objc_selector_type, buf);
return decl;
}
static void
build_selector_table_decl (void)
{
tree temp;
if (flag_typed_selectors)
{
build_selector_template ();
temp = build_array_type (objc_selector_template, NULL_TREE);
}
else
temp = build_array_type (objc_selector_type, NULL_TREE);
UOBJC_SELECTOR_TABLE_decl = start_var_decl (temp, "_OBJC_SELECTOR_TABLE");
}
static tree
build_selector (tree ident)
{
return convert (objc_selector_type,
add_objc_string (ident, meth_var_names));
}
static void
build_selector_translation_table (void)
{
tree chain, initlist = NULL_TREE;
int offset = 0;
tree decl = NULL_TREE;
for (chain = sel_ref_chain; chain; chain = TREE_CHAIN (chain))
{
tree expr;
if (warn_selector && objc_implementation_context)
{
tree method_chain;
bool found = false;
for (method_chain = meth_var_names_chain;
method_chain;
method_chain = TREE_CHAIN (method_chain))
{
if (TREE_VALUE (method_chain) == TREE_VALUE (chain))
{
found = true;
break;
}
}
if (!found)
{
location_t *loc;
if (flag_next_runtime && TREE_PURPOSE (chain))
loc = &DECL_SOURCE_LOCATION (TREE_PURPOSE (chain));
else
loc = &input_location;
warning ("%Hcreating selector for nonexistent method %qE",
loc, TREE_VALUE (chain));
}
}
expr = build_selector (TREE_VALUE (chain));
offset += IDENTIFIER_LENGTH (TREE_VALUE (chain)) + 1;
if (flag_next_runtime)
{
decl = TREE_PURPOSE (chain);
finish_var_decl (decl, expr);
}
else
{
if (flag_typed_selectors)
{
tree eltlist = NULL_TREE;
tree encoding = get_proto_encoding (TREE_PURPOSE (chain));
eltlist = tree_cons (NULL_TREE, expr, NULL_TREE);
eltlist = tree_cons (NULL_TREE, encoding, eltlist);
expr = objc_build_constructor (objc_selector_template,
nreverse (eltlist));
}
initlist = tree_cons (NULL_TREE, expr, initlist);
}
}
if (! flag_next_runtime)
{
initlist = tree_cons (NULL_TREE,
flag_typed_selectors
? objc_build_constructor
(objc_selector_template,
tree_cons (NULL_TREE,
build_int_cst (NULL_TREE, 0),
tree_cons (NULL_TREE,
build_int_cst (NULL_TREE, 0),
NULL_TREE)))
: build_int_cst (NULL_TREE, 0), initlist);
initlist = objc_build_constructor (TREE_TYPE (UOBJC_SELECTOR_TABLE_decl),
nreverse (initlist));
finish_var_decl (UOBJC_SELECTOR_TABLE_decl, initlist);
}
}
static tree
get_proto_encoding (tree proto)
{
tree encoding;
if (proto)
{
if (! METHOD_ENCODING (proto))
{
encoding = encode_method_prototype (proto);
METHOD_ENCODING (proto) = encoding;
}
else
encoding = METHOD_ENCODING (proto);
return add_objc_string (encoding, meth_var_types);
}
else
return build_int_cst (NULL_TREE, 0);
}
static tree
build_typed_selector_reference (tree ident, tree prototype)
{
tree *chain = &sel_ref_chain;
tree expr;
int index = 0;
while (*chain)
{
if (TREE_PURPOSE (*chain) == prototype && TREE_VALUE (*chain) == ident)
goto return_at_index;
index++;
chain = &TREE_CHAIN (*chain);
}
*chain = tree_cons (prototype, ident, NULL_TREE);
return_at_index:
expr = build_unary_op (ADDR_EXPR,
build_array_ref (UOBJC_SELECTOR_TABLE_decl,
build_int_cst (NULL_TREE, index)),
1);
return convert (objc_selector_type, expr);
}
static tree
build_selector_reference (tree ident)
{
tree *chain = &sel_ref_chain;
tree expr;
int index = 0;
while (*chain)
{
if (TREE_VALUE (*chain) == ident)
return (flag_next_runtime
? TREE_PURPOSE (*chain)
: build_array_ref (UOBJC_SELECTOR_TABLE_decl,
build_int_cst (NULL_TREE, index)));
index++;
chain = &TREE_CHAIN (*chain);
}
expr = (flag_next_runtime ? build_selector_reference_decl (): NULL_TREE);
*chain = tree_cons (expr, ident, NULL_TREE);
return (flag_next_runtime
? expr
: build_array_ref (UOBJC_SELECTOR_TABLE_decl,
build_int_cst (NULL_TREE, index)));
}
static GTY(()) int class_reference_idx;
static tree
build_class_reference_decl (void)
{
tree decl;
char buf[256];
sprintf (buf, "_OBJC_CLASS_REFERENCES_%d", class_reference_idx++);
decl = start_var_decl (objc_class_type, buf);
return decl;
}
static void
add_class_reference (tree ident)
{
tree chain;
if ((chain = cls_ref_chain))
{
tree tail;
do
{
if (ident == TREE_VALUE (chain))
return;
tail = chain;
chain = TREE_CHAIN (chain);
}
while (chain);
TREE_CHAIN (tail) = tree_cons (NULL_TREE, ident, NULL_TREE);
}
else
cls_ref_chain = tree_cons (NULL_TREE, ident, NULL_TREE);
}
tree
objc_get_class_reference (tree ident)
{
tree orig_ident;
#ifdef OBJCPLUS
if (processing_template_decl)
return build_min_nt (CLASS_REFERENCE_EXPR, ident);
if (TREE_CODE (ident) == TYPE_DECL)
ident = DECL_NAME (ident);
#endif
orig_ident = ident;
if (!(ident = objc_is_class_name (ident)))
{
error ("%qs is not an Objective-C class name or alias",
IDENTIFIER_POINTER (orig_ident));
return error_mark_node;
}
if (flag_next_runtime && !flag_zero_link)
{
tree *chain;
tree decl;
for (chain = &cls_ref_chain; *chain; chain = &TREE_CHAIN (*chain))
if (TREE_VALUE (*chain) == ident)
{
if (! TREE_PURPOSE (*chain))
TREE_PURPOSE (*chain) = build_class_reference_decl ();
return TREE_PURPOSE (*chain);
}
decl = build_class_reference_decl ();
*chain = tree_cons (decl, ident, NULL_TREE);
return decl;
}
else
{
tree params;
add_class_reference (ident);
params = build_tree_list (NULL_TREE,
my_build_string (IDENTIFIER_LENGTH (ident) + 1,
IDENTIFIER_POINTER (ident)));
assemble_external (objc_get_class_decl);
return build_function_call (objc_get_class_decl, params);
}
}
static tree
add_objc_string (tree ident, enum string_section section)
{
tree *chain, decl;
if (section == class_names)
chain = &class_names_chain;
else if (section == meth_var_names)
chain = &meth_var_names_chain;
else if (section == meth_var_types)
chain = &meth_var_types_chain;
else
abort ();
while (*chain)
{
if (TREE_VALUE (*chain) == ident)
return convert (string_type_node,
build_unary_op (ADDR_EXPR, TREE_PURPOSE (*chain), 1));
chain = &TREE_CHAIN (*chain);
}
decl = build_objc_string_decl (section);
*chain = tree_cons (decl, ident, NULL_TREE);
return convert (string_type_node, build_unary_op (ADDR_EXPR, decl, 1));
}
static GTY(()) int class_names_idx;
static GTY(()) int meth_var_names_idx;
static GTY(()) int meth_var_types_idx;
static tree
build_objc_string_decl (enum string_section section)
{
tree decl, ident;
char buf[256];
if (section == class_names)
sprintf (buf, "_OBJC_CLASS_NAME_%d", class_names_idx++);
else if (section == meth_var_names)
sprintf (buf, "_OBJC_METH_VAR_NAME_%d", meth_var_names_idx++);
else if (section == meth_var_types)
sprintf (buf, "_OBJC_METH_VAR_TYPE_%d", meth_var_types_idx++);
ident = get_identifier (buf);
decl = build_decl (VAR_DECL, ident, build_array_type (char_type_node, 0));
DECL_EXTERNAL (decl) = 1;
TREE_PUBLIC (decl) = 0;
TREE_USED (decl) = 1;
TREE_CONSTANT (decl) = 1;
DECL_CONTEXT (decl) = 0;
DECL_ARTIFICIAL (decl) = 1;
#ifdef OBJCPLUS
DECL_THIS_STATIC (decl) = 1;
#endif
make_decl_rtl (decl);
pushdecl_top_level (decl);
return decl;
}
void
objc_declare_alias (tree alias_ident, tree class_ident)
{
tree underlying_class;
#ifdef OBJCPLUS
if (current_namespace != global_namespace) {
error ("Objective-C declarations may only appear in global scope");
}
#endif
if (!(underlying_class = objc_is_class_name (class_ident)))
warning ("cannot find class %qs", IDENTIFIER_POINTER (class_ident));
else if (objc_is_class_name (alias_ident))
warning ("class %qs already exists", IDENTIFIER_POINTER (alias_ident));
else
alias_chain = tree_cons (underlying_class, alias_ident, alias_chain);
}
void
objc_declare_class (tree ident_list)
{
tree list;
#ifdef OBJCPLUS
if (current_namespace != global_namespace) {
error ("Objective-C declarations may only appear in global scope");
}
#endif
for (list = ident_list; list; list = TREE_CHAIN (list))
{
tree ident = TREE_VALUE (list);
if (! objc_is_class_name (ident))
{
tree record = lookup_name (ident), type = record;
if (record)
{
if (TREE_CODE (record) == TYPE_DECL)
type = DECL_ORIGINAL_TYPE (record);
if (!TYPE_HAS_OBJC_INFO (type)
|| !TYPE_OBJC_INTERFACE (type))
{
error ("%qs redeclared as different kind of symbol",
IDENTIFIER_POINTER (ident));
error ("%Jprevious declaration of '%D'",
record, record);
}
}
record = xref_tag (RECORD_TYPE, ident);
INIT_TYPE_OBJC_INFO (record);
TYPE_OBJC_INTERFACE (record) = ident;
class_chain = tree_cons (NULL_TREE, ident, class_chain);
}
}
}
tree
objc_is_class_name (tree ident)
{
tree chain;
if (ident && TREE_CODE (ident) == IDENTIFIER_NODE
&& identifier_global_value (ident))
ident = identifier_global_value (ident);
while (ident && TREE_CODE (ident) == TYPE_DECL && DECL_ORIGINAL_TYPE (ident))
ident = OBJC_TYPE_NAME (DECL_ORIGINAL_TYPE (ident));
if (ident && TREE_CODE (ident) == RECORD_TYPE)
ident = OBJC_TYPE_NAME (ident);
#ifdef OBJCPLUS
if (ident && TREE_CODE (ident) == TYPE_DECL)
ident = DECL_NAME (ident);
#endif
if (!ident || TREE_CODE (ident) != IDENTIFIER_NODE)
return NULL_TREE;
if (lookup_interface (ident))
return ident;
for (chain = class_chain; chain; chain = TREE_CHAIN (chain))
{
if (ident == TREE_VALUE (chain))
return ident;
}
for (chain = alias_chain; chain; chain = TREE_CHAIN (chain))
{
if (ident == TREE_VALUE (chain))
return TREE_PURPOSE (chain);
}
return 0;
}
tree
objc_is_id (tree type)
{
if (type && TREE_CODE (type) == IDENTIFIER_NODE
&& identifier_global_value (type))
type = identifier_global_value (type);
if (type && TREE_CODE (type) == TYPE_DECL)
type = TREE_TYPE (type);
return (objc_object_type && type
&& (IS_ID (type) || IS_CLASS (type) || IS_SUPER (type))
? type
: NULL_TREE);
}
tree
objc_is_object_ptr (tree type)
{
tree ret;
type = TYPE_MAIN_VARIANT (type);
if (!POINTER_TYPE_P (type))
return 0;
ret = objc_is_id (type);
if (!ret)
ret = objc_is_class_name (TREE_TYPE (type));
return ret;
}
static tree
lookup_interface (tree ident)
{
tree chain;
#ifdef OBJCPLUS
if (ident && TREE_CODE (ident) == TYPE_DECL)
ident = DECL_NAME (ident);
#endif
for (chain = interface_chain; chain; chain = TREE_CHAIN (chain))
{
if (ident == CLASS_NAME (chain))
return chain;
}
return NULL_TREE;
}
tree
objc_get_class_ivars (tree class_name)
{
tree interface = lookup_interface (class_name);
if (interface)
return get_class_ivars (interface);
error ("cannot find interface declaration for %qs",
IDENTIFIER_POINTER (class_name));
return error_mark_node;
}
static tree
get_class_ivars (tree interface)
{
tree ivar_chain = copy_list (CLASS_RAW_IVARS (interface));
if (!CLASS_IVARS (interface))
CLASS_IVARS (interface) = ivar_chain;
while (CLASS_SUPER_NAME (interface))
{
interface = lookup_interface (CLASS_SUPER_NAME (interface));
ivar_chain = chainon (copy_list (CLASS_RAW_IVARS (interface)),
ivar_chain);
}
return ivar_chain;
}
static tree
objc_create_temporary_var (tree type)
{
tree decl;
decl = build_decl (VAR_DECL, NULL_TREE, type);
TREE_USED (decl) = 1;
DECL_ARTIFICIAL (decl) = 1;
DECL_IGNORED_P (decl) = 1;
DECL_CONTEXT (decl) = current_function_decl;
return decl;
}
struct objc_try_context
{
struct objc_try_context *outer;
tree try_body;
tree finally_body;
location_t try_locus;
location_t end_try_locus;
location_t end_catch_locus;
location_t finally_locus;
location_t end_finally_locus;
tree catch_list;
tree current_catch;
tree caught_decl;
tree stack_decl;
tree rethrow_decl;
};
static struct objc_try_context *cur_try_context;
#ifndef OBJCPLUS
static tree
objc_eh_runtime_type (tree type)
{
return add_objc_string (OBJC_TYPE_NAME (TREE_TYPE (type)), class_names);
}
#endif
static void
objc_init_exceptions (void)
{
static bool done = false;
if (done)
return;
done = true;
if (flag_objc_sjlj_exceptions)
{
if (!flag_objc_exceptions)
warning ("use %<-fobjc-exceptions%> to enable Objective-C "
"exception syntax");
}
#ifndef OBJCPLUS
else
{
c_eh_initialized_p = true;
eh_personality_libfunc
= init_one_libfunc (USING_SJLJ_EXCEPTIONS
? "__gnu_objc_personality_sj0"
: "__gnu_objc_personality_v0");
using_eh_for_cleanups ();
lang_eh_runtime_type = objc_eh_runtime_type;
}
#endif
}
static tree
objc_build_exc_ptr (void)
{
if (flag_objc_sjlj_exceptions)
{
tree var = cur_try_context->caught_decl;
if (!var)
{
var = objc_create_temporary_var (objc_object_type);
cur_try_context->caught_decl = var;
}
return var;
}
else
return build (EXC_PTR_EXPR, objc_object_type);
}
static tree
next_sjlj_build_try_exit (void)
{
tree t;
t = build_fold_addr_expr (cur_try_context->stack_decl);
t = tree_cons (NULL, t, NULL);
t = build_function_call (objc_exception_try_exit_decl, t);
return t;
}
static tree
next_sjlj_build_enter_and_setjmp (void)
{
tree t, enter, sj, cond;
t = build_fold_addr_expr (cur_try_context->stack_decl);
t = tree_cons (NULL, t, NULL);
enter = build_function_call (objc_exception_try_enter_decl, t);
t = build_component_ref (cur_try_context->stack_decl,
get_identifier ("buf"));
t = build_fold_addr_expr (t);
t = convert (ptr_type_node, t);
t = tree_cons (NULL, t, NULL);
sj = build_function_call (objc_setjmp_decl, t);
cond = build (COMPOUND_EXPR, TREE_TYPE (sj), enter, sj);
cond = lang_hooks.truthvalue_conversion (cond);
return build (COND_EXPR, void_type_node, cond, NULL, NULL);
}
static tree
next_sjlj_build_exc_extract (tree decl)
{
tree t;
t = build_fold_addr_expr (cur_try_context->stack_decl);
t = tree_cons (NULL, t, NULL);
t = build_function_call (objc_exception_extract_decl, t);
t = convert (TREE_TYPE (decl), t);
t = build (MODIFY_EXPR, void_type_node, decl, t);
return t;
}
static tree
next_sjlj_build_catch_list (void)
{
tree_stmt_iterator i = tsi_start (cur_try_context->catch_list);
tree catch_seq, t;
tree *last = &catch_seq;
bool saw_id = false;
for (; !tsi_end_p (i); tsi_next (&i))
{
tree stmt = tsi_stmt (i);
tree type = CATCH_TYPES (stmt);
tree body = CATCH_BODY (stmt);
if (type == NULL)
{
*last = body;
saw_id = true;
break;
}
else
{
tree args, cond;
if (type == error_mark_node)
cond = error_mark_node;
else
{
args = tree_cons (NULL, cur_try_context->caught_decl, NULL);
t = objc_get_class_reference (OBJC_TYPE_NAME (TREE_TYPE (type)));
args = tree_cons (NULL, t, args);
t = build_function_call (objc_exception_match_decl, args);
cond = lang_hooks.truthvalue_conversion (t);
}
t = build (COND_EXPR, void_type_node, cond, body, NULL);
SET_EXPR_LOCUS (t, EXPR_LOCUS (stmt));
*last = t;
last = &COND_EXPR_ELSE (t);
}
}
if (!saw_id)
{
t = build (MODIFY_EXPR, void_type_node, cur_try_context->rethrow_decl,
cur_try_context->caught_decl);
SET_EXPR_LOCATION (t, cur_try_context->end_catch_locus);
append_to_statement_list (t, last);
t = next_sjlj_build_try_exit ();
SET_EXPR_LOCATION (t, cur_try_context->end_catch_locus);
append_to_statement_list (t, last);
}
return catch_seq;
}
static tree
next_sjlj_build_try_catch_finally (void)
{
tree rethrow_decl, stack_decl, t;
tree catch_seq, try_fin, bind;
t = xref_tag (RECORD_TYPE, get_identifier (UTAG_EXCDATA));
stack_decl = objc_create_temporary_var (t);
cur_try_context->stack_decl = stack_decl;
rethrow_decl = objc_create_temporary_var (objc_object_type);
cur_try_context->rethrow_decl = rethrow_decl;
TREE_THIS_VOLATILE (rethrow_decl) = 1;
TREE_CHAIN (rethrow_decl) = stack_decl;
bind = build (BIND_EXPR, void_type_node, rethrow_decl, NULL, NULL);
SET_EXPR_LOCATION (bind, cur_try_context->try_locus);
TREE_SIDE_EFFECTS (bind) = 1;
t = build (MODIFY_EXPR, void_type_node, rethrow_decl,
convert (objc_object_type, null_pointer_node));
SET_EXPR_LOCATION (t, cur_try_context->try_locus);
append_to_statement_list (t, &BIND_EXPR_BODY (bind));
try_fin = build (TRY_FINALLY_EXPR, void_type_node, NULL, NULL);
SET_EXPR_LOCATION (try_fin, cur_try_context->try_locus);
TREE_SIDE_EFFECTS (try_fin) = 1;
append_to_statement_list (try_fin, &BIND_EXPR_BODY (bind));
if (cur_try_context->catch_list)
{
tree caught_decl = objc_build_exc_ptr ();
catch_seq = build_stmt (BIND_EXPR, caught_decl, NULL, NULL);
t = next_sjlj_build_exc_extract (caught_decl);
append_to_statement_list (t, &BIND_EXPR_BODY (catch_seq));
t = next_sjlj_build_enter_and_setjmp ();
COND_EXPR_THEN (t) = next_sjlj_build_exc_extract (rethrow_decl);
COND_EXPR_ELSE (t) = next_sjlj_build_catch_list ();
append_to_statement_list (t, &BIND_EXPR_BODY (catch_seq));
}
else
catch_seq = next_sjlj_build_exc_extract (rethrow_decl);
SET_EXPR_LOCATION (catch_seq, cur_try_context->end_try_locus);
t = next_sjlj_build_enter_and_setjmp ();
SET_EXPR_LOCATION (t, cur_try_context->try_locus);
COND_EXPR_THEN (t) = catch_seq;
COND_EXPR_ELSE (t) = cur_try_context->try_body;
TREE_OPERAND (try_fin, 0) = t;
t = next_sjlj_build_try_exit ();
t = build_stmt (COND_EXPR,
lang_hooks.truthvalue_conversion (rethrow_decl),
NULL, t);
SET_EXPR_LOCATION (t, cur_try_context->finally_locus);
append_to_statement_list (t, &TREE_OPERAND (try_fin, 1));
append_to_statement_list (cur_try_context->finally_body,
&TREE_OPERAND (try_fin, 1));
t = tree_cons (NULL, rethrow_decl, NULL);
t = build_function_call (objc_exception_throw_decl, t);
t = build_stmt (COND_EXPR,
lang_hooks.truthvalue_conversion (rethrow_decl),
t, NULL);
SET_EXPR_LOCATION (t, cur_try_context->end_finally_locus);
append_to_statement_list (t, &TREE_OPERAND (try_fin, 1));
return bind;
}
void
objc_begin_try_stmt (location_t try_locus, tree body)
{
struct objc_try_context *c = xcalloc (1, sizeof (*c));
c->outer = cur_try_context;
c->try_body = body;
c->try_locus = try_locus;
c->end_try_locus = input_location;
cur_try_context = c;
objc_init_exceptions ();
}
void
objc_begin_catch_clause (tree decl)
{
tree compound, type, t;
compound = c_begin_compound_stmt (true);
decl = build_decl (VAR_DECL, DECL_NAME (decl), TREE_TYPE (decl));
lang_hooks.decls.pushdecl (decl);
TREE_USED (decl) = 1;
type = TREE_TYPE (decl);
if (POINTER_TYPE_P (type) && objc_is_object_id (TREE_TYPE (type)))
type = NULL;
else if (!POINTER_TYPE_P (type) || !TYPED_OBJECT (TREE_TYPE (type)))
{
error ("@catch parameter is not a known Objective-C class type");
type = error_mark_node;
}
else if (cur_try_context->catch_list)
{
tree_stmt_iterator i = tsi_start (cur_try_context->catch_list);
for (; !tsi_end_p (i); tsi_next (&i))
{
tree stmt = tsi_stmt (i);
t = CATCH_TYPES (stmt);
if (t == error_mark_node)
continue;
if (!t || objc_comptypes (TREE_TYPE (t), TREE_TYPE (type), 0) == 1)
{
warning ("exception of type %<%T%> will be caught",
TREE_TYPE (type));
warning ("%H by earlier handler for %<%T%>",
EXPR_LOCUS (stmt), TREE_TYPE (t ? t : objc_object_type));
break;
}
}
}
t = build_stmt (CATCH_EXPR, type, compound);
cur_try_context->current_catch = t;
t = objc_build_exc_ptr ();
t = convert (TREE_TYPE (decl), t);
t = build (MODIFY_EXPR, void_type_node, decl, t);
add_stmt (t);
}
void
objc_finish_catch_clause (void)
{
tree c = cur_try_context->current_catch;
cur_try_context->current_catch = NULL;
cur_try_context->end_catch_locus = input_location;
CATCH_BODY (c) = c_end_compound_stmt (CATCH_BODY (c), 1);
append_to_statement_list (c, &cur_try_context->catch_list);
}
void
objc_build_finally_clause (location_t finally_locus, tree body)
{
cur_try_context->finally_body = body;
cur_try_context->finally_locus = finally_locus;
cur_try_context->end_finally_locus = input_location;
}
void
objc_finish_try_stmt (void)
{
struct objc_try_context *c = cur_try_context;
tree stmt;
if (c->catch_list == NULL && c->finally_body == NULL)
error ("%<@try%> without %<@catch%> or %<@finally%>");
if (flag_objc_sjlj_exceptions)
{
if (!cur_try_context->finally_body)
{
cur_try_context->finally_locus = input_location;
cur_try_context->end_finally_locus = input_location;
}
stmt = next_sjlj_build_try_catch_finally ();
}
else
{
stmt = c->try_body;
if (c->catch_list)
{
stmt = build_stmt (TRY_CATCH_EXPR, stmt, c->catch_list);
SET_EXPR_LOCATION (stmt, cur_try_context->try_locus);
}
if (c->finally_body)
{
stmt = build_stmt (TRY_FINALLY_EXPR, stmt, c->finally_body);
SET_EXPR_LOCATION (stmt, cur_try_context->try_locus);
}
}
add_stmt (stmt);
cur_try_context = c->outer;
free (c);
}
tree
objc_build_throw_stmt (tree throw_expr)
{
tree args;
objc_init_exceptions ();
if (throw_expr == NULL)
{
if (cur_try_context == NULL
|| cur_try_context->current_catch == NULL)
{
error ("%<@throw%> (rethrow) used outside of a @catch block");
return NULL_TREE;
}
throw_expr = objc_build_exc_ptr ();
}
args = tree_cons (NULL, throw_expr, NULL);
return add_stmt (build_function_call (objc_exception_throw_decl, args));
}
void
objc_build_synchronized (location_t start_locus, tree mutex, tree body)
{
tree args, call;
mutex = save_expr (mutex);
args = tree_cons (NULL, mutex, NULL);
call = build_function_call (objc_sync_enter_decl, args);
SET_EXPR_LOCATION (call, start_locus);
add_stmt (call);
args = tree_cons (NULL, mutex, NULL);
call = build_function_call (objc_sync_exit_decl, args);
SET_EXPR_LOCATION (call, input_location);
objc_begin_try_stmt (start_locus, body);
objc_build_finally_clause (input_location, call);
objc_finish_try_stmt ();
}
#ifdef TARGET_POWERPC
#define _JBLEN (26 + 36 + 129 + 1)
#else
#define _JBLEN 18
#endif
static void
build_next_objc_exception_stuff (void)
{
tree field_decl, field_decl_chain, index, temp_type;
objc_exception_data_template
= start_struct (RECORD_TYPE, get_identifier (UTAG_EXCDATA));
index = build_index_type (build_int_cst (NULL_TREE, _JBLEN - 1));
field_decl = create_field_decl (build_array_type (integer_type_node, index),
"buf");
field_decl_chain = field_decl;
index = build_index_type (build_int_cst (NULL_TREE, 4 - 1));
field_decl = create_field_decl (build_array_type (ptr_type_node, index),
"pointers");
chainon (field_decl_chain, field_decl);
finish_struct (objc_exception_data_template, field_decl_chain, NULL_TREE);
temp_type = build_function_type (integer_type_node, NULL_TREE);
objc_setjmp_decl
= builtin_function (TAG_SETJMP, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
temp_type
= build_function_type (objc_object_type,
tree_cons (NULL_TREE,
build_pointer_type (objc_exception_data_template),
OBJC_VOID_AT_END));
objc_exception_extract_decl
= builtin_function (TAG_EXCEPTIONEXTRACT, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
temp_type
= build_function_type (void_type_node,
tree_cons (NULL_TREE,
build_pointer_type (objc_exception_data_template),
OBJC_VOID_AT_END));
objc_exception_try_enter_decl
= builtin_function (TAG_EXCEPTIONTRYENTER, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
objc_exception_try_exit_decl
= builtin_function (TAG_EXCEPTIONTRYEXIT, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
temp_type
= build_function_type (integer_type_node,
tree_cons (NULL_TREE, objc_object_type,
tree_cons (NULL_TREE, objc_object_type,
OBJC_VOID_AT_END)));
objc_exception_match_decl
= builtin_function (TAG_EXCEPTIONMATCH, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
}
static void
build_objc_exception_stuff (void)
{
tree noreturn_list, nothrow_list, temp_type;
noreturn_list = tree_cons (get_identifier ("noreturn"), NULL, NULL);
nothrow_list = tree_cons (get_identifier ("nothrow"), NULL, NULL);
temp_type = build_function_type (void_type_node,
tree_cons (NULL_TREE, objc_object_type,
OBJC_VOID_AT_END));
objc_exception_throw_decl
= builtin_function (TAG_EXCEPTIONTHROW, temp_type, 0, NOT_BUILT_IN, NULL,
noreturn_list);
objc_sync_enter_decl
= builtin_function (TAG_SYNCENTER, temp_type, 0, NOT_BUILT_IN,
NULL, nothrow_list);
objc_sync_exit_decl
= builtin_function (TAG_SYNCEXIT, temp_type, 0, NOT_BUILT_IN,
NULL, nothrow_list);
}
static void
build_private_template (tree class)
{
if (!CLASS_STATIC_TEMPLATE (class))
{
tree record = start_struct (RECORD_TYPE, CLASS_NAME (class));
finish_struct (record, get_class_ivars (class), NULL_TREE);
INIT_TYPE_OBJC_INFO (record);
TYPE_OBJC_INTERFACE (record) = class;
CLASS_STATIC_TEMPLATE (class) = record;
}
}
static void
build_protocol_template (void)
{
tree field_decl, field_decl_chain;
objc_protocol_template = start_struct (RECORD_TYPE,
get_identifier (UTAG_PROTOCOL));
field_decl = create_field_decl (build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier (UTAG_CLASS))),
"isa");
field_decl_chain = field_decl;
field_decl = create_field_decl (string_type_node, "protocol_name");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (build_pointer_type
(build_pointer_type
(objc_protocol_template)),
"protocol_list");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier
(UTAG_METHOD_PROTOTYPE_LIST))),
"instance_methods");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier
(UTAG_METHOD_PROTOTYPE_LIST))),
"class_methods");
chainon (field_decl_chain, field_decl);
finish_struct (objc_protocol_template, field_decl_chain, NULL_TREE);
}
static tree
build_descriptor_table_initializer (tree type, tree entries)
{
tree initlist = NULL_TREE;
do
{
tree eltlist = NULL_TREE;
eltlist
= tree_cons (NULL_TREE,
build_selector (METHOD_SEL_NAME (entries)), NULL_TREE);
eltlist
= tree_cons (NULL_TREE,
add_objc_string (METHOD_ENCODING (entries),
meth_var_types),
eltlist);
initlist
= tree_cons (NULL_TREE,
objc_build_constructor (type, nreverse (eltlist)),
initlist);
entries = TREE_CHAIN (entries);
}
while (entries);
return objc_build_constructor (build_array_type (type, 0),
nreverse (initlist));
}
static tree
build_method_prototype_list_template (tree list_type, int size)
{
tree objc_ivar_list_record;
tree field_decl, field_decl_chain;
objc_ivar_list_record = start_struct (RECORD_TYPE, NULL_TREE);
field_decl = create_field_decl (integer_type_node, "method_count");
field_decl_chain = field_decl;
field_decl = create_field_decl (build_array_type
(list_type,
build_index_type
(build_int_cst (NULL_TREE, size - 1))),
"method_list");
chainon (field_decl_chain, field_decl);
finish_struct (objc_ivar_list_record, field_decl_chain, NULL_TREE);
return objc_ivar_list_record;
}
static tree
build_method_prototype_template (void)
{
tree proto_record;
tree field_decl, field_decl_chain;
proto_record
= start_struct (RECORD_TYPE, get_identifier (UTAG_METHOD_PROTOTYPE));
field_decl = create_field_decl (objc_selector_type, "_cmd");
field_decl_chain = field_decl;
field_decl = create_field_decl (string_type_node, "method_types");
chainon (field_decl_chain, field_decl);
finish_struct (proto_record, field_decl_chain, NULL_TREE);
return proto_record;
}
static tree
objc_method_parm_type (tree type)
{
type = TREE_VALUE (TREE_TYPE (type));
if (TREE_CODE (type) == TYPE_DECL)
type = TREE_TYPE (type);
return TYPE_MAIN_VARIANT (type);
}
static int
objc_encoded_type_size (tree type)
{
int sz = int_size_in_bytes (type);
if (sz > 0 && INTEGRAL_TYPE_P (type))
sz = MAX (sz, int_size_in_bytes (integer_type_node));
else if (TREE_CODE (type) == ARRAY_TYPE)
sz = int_size_in_bytes (ptr_type_node);
return sz;
}
static tree
encode_method_prototype (tree method_decl)
{
tree parms;
int parm_offset, i;
char buf[40];
tree result;
encode_type_qualifiers (TREE_PURPOSE (TREE_TYPE (method_decl)));
encode_type (objc_method_parm_type (method_decl),
obstack_object_size (&util_obstack),
OBJC_ENCODE_INLINE_DEFS);
i = int_size_in_bytes (ptr_type_node);
parm_offset = 2 * i;
for (parms = METHOD_SEL_ARGS (method_decl); parms;
parms = TREE_CHAIN (parms))
{
tree type = objc_method_parm_type (parms);
int sz = objc_encoded_type_size (type);
if (sz < 0)
{
error ("%Jtype '%D' does not have a known size",
type, type);
goto finish_encoding;
}
parm_offset += sz;
}
sprintf (buf, "%d@0:%d", parm_offset, i);
obstack_grow (&util_obstack, buf, strlen (buf));
parm_offset = 2 * i;
for (parms = METHOD_SEL_ARGS (method_decl); parms;
parms = TREE_CHAIN (parms))
{
tree type = objc_method_parm_type (parms);
encode_type_qualifiers (TREE_PURPOSE (TREE_TYPE (parms)));
encode_type (type, obstack_object_size (&util_obstack),
OBJC_ENCODE_INLINE_DEFS);
sprintf (buf, "%d", parm_offset);
parm_offset += objc_encoded_type_size (type);
obstack_grow (&util_obstack, buf, strlen (buf));
}
finish_encoding:
obstack_1grow (&util_obstack, '\0');
result = get_identifier (obstack_finish (&util_obstack));
obstack_free (&util_obstack, util_firstobj);
return result;
}
static tree
generate_descriptor_table (tree type, const char *name, int size, tree list,
tree proto)
{
tree decl, initlist;
decl = start_var_decl (type, synth_id_with_class_suffix (name, proto));
initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, size));
initlist = tree_cons (NULL_TREE, list, initlist);
finish_var_decl (decl, objc_build_constructor (type, nreverse (initlist)));
return decl;
}
static void
generate_method_descriptors (tree protocol)
{
tree initlist, chain, method_list_template;
int size;
if (!objc_method_prototype_template)
objc_method_prototype_template = build_method_prototype_template ();
chain = PROTOCOL_CLS_METHODS (protocol);
if (chain)
{
size = list_length (chain);
method_list_template
= build_method_prototype_list_template (objc_method_prototype_template,
size);
initlist
= build_descriptor_table_initializer (objc_method_prototype_template,
chain);
UOBJC_CLASS_METHODS_decl
= generate_descriptor_table (method_list_template,
"_OBJC_PROTOCOL_CLASS_METHODS",
size, initlist, protocol);
}
else
UOBJC_CLASS_METHODS_decl = 0;
chain = PROTOCOL_NST_METHODS (protocol);
if (chain)
{
size = list_length (chain);
method_list_template
= build_method_prototype_list_template (objc_method_prototype_template,
size);
initlist
= build_descriptor_table_initializer (objc_method_prototype_template,
chain);
UOBJC_INSTANCE_METHODS_decl
= generate_descriptor_table (method_list_template,
"_OBJC_PROTOCOL_INSTANCE_METHODS",
size, initlist, protocol);
}
else
UOBJC_INSTANCE_METHODS_decl = 0;
}
static void
generate_protocol_references (tree plist)
{
tree lproto;
for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto))
{
tree proto = TREE_VALUE (lproto);
if (TREE_CODE (proto) == PROTOCOL_INTERFACE_TYPE
&& PROTOCOL_NAME (proto))
{
if (! PROTOCOL_FORWARD_DECL (proto))
build_protocol_reference (proto);
if (PROTOCOL_LIST (proto))
generate_protocol_references (PROTOCOL_LIST (proto));
}
}
}
static void
generate_protocols (void)
{
tree p, encoding;
tree decl;
tree initlist, protocol_name_expr, refs_decl, refs_expr;
for (p = protocol_chain; p; p = TREE_CHAIN (p))
if (PROTOCOL_FORWARD_DECL (p) && PROTOCOL_LIST (p))
generate_protocol_references (PROTOCOL_LIST (p));
for (p = protocol_chain; p; p = TREE_CHAIN (p))
{
tree nst_methods = PROTOCOL_NST_METHODS (p);
tree cls_methods = PROTOCOL_CLS_METHODS (p);
decl = PROTOCOL_FORWARD_DECL (p);
if (!decl)
continue;
add_class_reference (get_identifier (PROTOCOL_OBJECT_CLASS_NAME));
while (nst_methods)
{
if (! METHOD_ENCODING (nst_methods))
{
encoding = encode_method_prototype (nst_methods);
METHOD_ENCODING (nst_methods) = encoding;
}
nst_methods = TREE_CHAIN (nst_methods);
}
while (cls_methods)
{
if (! METHOD_ENCODING (cls_methods))
{
encoding = encode_method_prototype (cls_methods);
METHOD_ENCODING (cls_methods) = encoding;
}
cls_methods = TREE_CHAIN (cls_methods);
}
generate_method_descriptors (p);
if (PROTOCOL_LIST (p))
refs_decl = generate_protocol_list (p);
else
refs_decl = 0;
protocol_name_expr = add_objc_string (PROTOCOL_NAME (p), class_names);
if (refs_decl)
refs_expr = convert (build_pointer_type (build_pointer_type
(objc_protocol_template)),
build_unary_op (ADDR_EXPR, refs_decl, 0));
else
refs_expr = build_int_cst (NULL_TREE, 0);
initlist = build_protocol_initializer (TREE_TYPE (decl),
protocol_name_expr, refs_expr,
UOBJC_INSTANCE_METHODS_decl,
UOBJC_CLASS_METHODS_decl);
finish_var_decl (decl, initlist);
}
}
static tree
build_protocol_initializer (tree type, tree protocol_name,
tree protocol_list, tree instance_methods,
tree class_methods)
{
tree initlist = NULL_TREE, expr;
tree cast_type = build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier (UTAG_CLASS)));
expr = build_int_cst (cast_type, PROTOCOL_VERSION);
initlist = tree_cons (NULL_TREE, expr, initlist);
initlist = tree_cons (NULL_TREE, protocol_name, initlist);
initlist = tree_cons (NULL_TREE, protocol_list, initlist);
if (!instance_methods)
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
else
{
expr = build_unary_op (ADDR_EXPR, instance_methods, 0);
initlist = tree_cons (NULL_TREE, expr, initlist);
}
if (!class_methods)
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
else
{
expr = build_unary_op (ADDR_EXPR, class_methods, 0);
initlist = tree_cons (NULL_TREE, expr, initlist);
}
return objc_build_constructor (type, nreverse (initlist));
}
static void
build_category_template (void)
{
tree field_decl, field_decl_chain;
objc_category_template = start_struct (RECORD_TYPE,
get_identifier (UTAG_CATEGORY));
field_decl = create_field_decl (string_type_node, "category_name");
field_decl_chain = field_decl;
field_decl = create_field_decl (string_type_node, "class_name");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier
(UTAG_METHOD_LIST))),
"instance_methods");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier
(UTAG_METHOD_LIST))),
"class_methods");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (build_pointer_type
(build_pointer_type
(objc_protocol_template)),
"protocol_list");
chainon (field_decl_chain, field_decl);
finish_struct (objc_category_template, field_decl_chain, NULL_TREE);
}
static void
build_selector_template (void)
{
tree field_decl, field_decl_chain;
objc_selector_template
= start_struct (RECORD_TYPE, get_identifier (UTAG_SELECTOR));
field_decl = create_field_decl (objc_selector_type, "sel_id");
field_decl_chain = field_decl;
field_decl = create_field_decl (string_type_node, "sel_type");
chainon (field_decl_chain, field_decl);
finish_struct (objc_selector_template, field_decl_chain, NULL_TREE);
}
static void
build_class_template (void)
{
tree field_decl, field_decl_chain;
objc_class_template
= start_struct (RECORD_TYPE, get_identifier (UTAG_CLASS));
field_decl = create_field_decl (build_pointer_type (objc_class_template),
"isa");
field_decl_chain = field_decl;
field_decl = create_field_decl (build_pointer_type (objc_class_template),
"super_class");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (string_type_node, "name");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (long_integer_type_node, "version");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (long_integer_type_node, "info");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (long_integer_type_node, "instance_size");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier
(UTAG_IVAR_LIST))),
"ivars");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier
(UTAG_METHOD_LIST))),
"methods");
chainon (field_decl_chain, field_decl);
if (flag_next_runtime)
{
field_decl = create_field_decl (build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier
("objc_cache"))),
"cache");
chainon (field_decl_chain, field_decl);
}
else
{
field_decl = create_field_decl (build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier
("sarray"))),
"dtable");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (build_pointer_type
(objc_class_template),
"subclass_list");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (build_pointer_type
(objc_class_template),
"sibling_class");
chainon (field_decl_chain, field_decl);
}
field_decl = create_field_decl (build_pointer_type
(build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier
(UTAG_PROTOCOL)))),
"protocol_list");
chainon (field_decl_chain, field_decl);
if (flag_next_runtime)
{
field_decl = create_field_decl (build_pointer_type (void_type_node),
"sel_id");
chainon (field_decl_chain, field_decl);
}
field_decl = create_field_decl (build_pointer_type (void_type_node),
"gc_object_type");
chainon (field_decl_chain, field_decl);
finish_struct (objc_class_template, field_decl_chain, NULL_TREE);
}
static void
synth_forward_declarations (void)
{
tree an_id;
UOBJC_CLASS_decl = build_metadata_decl ("_OBJC_CLASS",
objc_class_template);
UOBJC_METACLASS_decl = build_metadata_decl ("_OBJC_METACLASS",
objc_class_template);
an_id = get_identifier ("super_class");
ucls_super_ref = build_component_ref (UOBJC_CLASS_decl, an_id);
uucls_super_ref = build_component_ref (UOBJC_METACLASS_decl, an_id);
}
static void
error_with_ivar (const char *message, tree decl)
{
error ("%J%s %qs", decl,
message, gen_declaration (decl));
}
static void
check_ivars (tree inter, tree imp)
{
tree intdecls = CLASS_RAW_IVARS (inter);
tree impdecls = CLASS_RAW_IVARS (imp);
while (1)
{
tree t1, t2;
#ifdef OBJCPLUS
if (intdecls && TREE_CODE (intdecls) == TYPE_DECL)
intdecls = TREE_CHAIN (intdecls);
#endif
if (intdecls == 0 && impdecls == 0)
break;
if (intdecls == 0 || impdecls == 0)
{
error ("inconsistent instance variable specification");
break;
}
t1 = TREE_TYPE (intdecls); t2 = TREE_TYPE (impdecls);
if (!comptypes (t1, t2)
|| !tree_int_cst_equal (DECL_INITIAL (intdecls),
DECL_INITIAL (impdecls)))
{
if (DECL_NAME (intdecls) == DECL_NAME (impdecls))
{
error_with_ivar ("conflicting instance variable type",
impdecls);
error_with_ivar ("previous declaration of",
intdecls);
}
else
{
error ("inconsistent instance variable specification");
break;
}
}
else if (DECL_NAME (intdecls) != DECL_NAME (impdecls))
{
error_with_ivar ("conflicting instance variable name",
impdecls);
error_with_ivar ("previous declaration of",
intdecls);
}
intdecls = TREE_CHAIN (intdecls);
impdecls = TREE_CHAIN (impdecls);
}
}
static void
build_super_template (void)
{
tree field_decl, field_decl_chain;
objc_super_template = start_struct (RECORD_TYPE, get_identifier (UTAG_SUPER));
field_decl = create_field_decl (objc_object_type, "self");
field_decl_chain = field_decl;
field_decl = create_field_decl (build_pointer_type (objc_class_template),
"super_class");
chainon (field_decl_chain, field_decl);
finish_struct (objc_super_template, field_decl_chain, NULL_TREE);
}
static tree
build_ivar_template (void)
{
tree objc_ivar_id, objc_ivar_record;
tree field_decl, field_decl_chain;
objc_ivar_id = get_identifier (UTAG_IVAR);
objc_ivar_record = start_struct (RECORD_TYPE, objc_ivar_id);
field_decl = create_field_decl (string_type_node, "ivar_name");
field_decl_chain = field_decl;
field_decl = create_field_decl (string_type_node, "ivar_type");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (integer_type_node, "ivar_offset");
chainon (field_decl_chain, field_decl);
finish_struct (objc_ivar_record, field_decl_chain, NULL_TREE);
return objc_ivar_record;
}
static tree
build_ivar_list_template (tree list_type, int size)
{
tree objc_ivar_list_record;
tree field_decl, field_decl_chain;
objc_ivar_list_record = start_struct (RECORD_TYPE, NULL_TREE);
field_decl = create_field_decl (integer_type_node, "ivar_count");
field_decl_chain = field_decl;
field_decl = create_field_decl (build_array_type
(list_type,
build_index_type
(build_int_cst (NULL_TREE, size - 1))),
"ivar_list");
chainon (field_decl_chain, field_decl);
finish_struct (objc_ivar_list_record, field_decl_chain, NULL_TREE);
return objc_ivar_list_record;
}
static tree
build_method_list_template (tree list_type, int size)
{
tree objc_ivar_list_record;
tree field_decl, field_decl_chain;
objc_ivar_list_record = start_struct (RECORD_TYPE, NULL_TREE);
field_decl = create_field_decl (build_pointer_type
(xref_tag (RECORD_TYPE,
get_identifier
(UTAG_METHOD_PROTOTYPE_LIST))),
"method_next");
field_decl_chain = field_decl;
field_decl = create_field_decl (integer_type_node, "method_count");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (build_array_type
(list_type,
build_index_type
(build_int_cst (NULL_TREE, size - 1))),
"method_list");
chainon (field_decl_chain, field_decl);
finish_struct (objc_ivar_list_record, field_decl_chain, NULL_TREE);
return objc_ivar_list_record;
}
static tree
build_ivar_list_initializer (tree type, tree field_decl)
{
tree initlist = NULL_TREE;
do
{
tree ivar = NULL_TREE;
if (DECL_NAME (field_decl))
ivar = tree_cons (NULL_TREE,
add_objc_string (DECL_NAME (field_decl),
meth_var_names),
ivar);
else
ivar = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), ivar);
encode_field_decl (field_decl,
obstack_object_size (&util_obstack),
OBJC_ENCODE_DONT_INLINE_DEFS);
obstack_1grow (&util_obstack, 0);
ivar
= tree_cons
(NULL_TREE,
add_objc_string (get_identifier (obstack_finish (&util_obstack)),
meth_var_types),
ivar);
obstack_free (&util_obstack, util_firstobj);
ivar = tree_cons (NULL_TREE, byte_position (field_decl), ivar);
initlist = tree_cons (NULL_TREE,
objc_build_constructor (type, nreverse (ivar)),
initlist);
do
field_decl = TREE_CHAIN (field_decl);
while (field_decl && TREE_CODE (field_decl) != FIELD_DECL);
}
while (field_decl);
return objc_build_constructor (build_array_type (type, 0),
nreverse (initlist));
}
static tree
generate_ivars_list (tree type, const char *name, int size, tree list)
{
tree decl, initlist;
decl = start_var_decl (type, synth_id_with_class_suffix
(name, objc_implementation_context));
initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, size));
initlist = tree_cons (NULL_TREE, list, initlist);
finish_var_decl (decl,
objc_build_constructor (TREE_TYPE (decl),
nreverse (initlist)));
return decl;
}
static int
ivar_list_length (tree t)
{
int count = 0;
for (; t; t = TREE_CHAIN (t))
if (TREE_CODE (t) == FIELD_DECL)
++count;
return count;
}
static void
generate_ivar_lists (void)
{
tree initlist, ivar_list_template, chain;
int size;
generating_instance_variables = 1;
if (!objc_ivar_template)
objc_ivar_template = build_ivar_template ();
if (CLASS_SUPER_NAME (implementation_template) == NULL_TREE
&& (chain = TYPE_FIELDS (objc_class_template)))
{
size = ivar_list_length (chain);
ivar_list_template = build_ivar_list_template (objc_ivar_template, size);
initlist = build_ivar_list_initializer (objc_ivar_template, chain);
UOBJC_CLASS_VARIABLES_decl
= generate_ivars_list (ivar_list_template, "_OBJC_CLASS_VARIABLES",
size, initlist);
}
else
UOBJC_CLASS_VARIABLES_decl = 0;
chain = CLASS_IVARS (implementation_template);
if (chain)
{
size = ivar_list_length (chain);
ivar_list_template = build_ivar_list_template (objc_ivar_template, size);
initlist = build_ivar_list_initializer (objc_ivar_template, chain);
UOBJC_INSTANCE_VARIABLES_decl
= generate_ivars_list (ivar_list_template, "_OBJC_INSTANCE_VARIABLES",
size, initlist);
}
else
UOBJC_INSTANCE_VARIABLES_decl = 0;
generating_instance_variables = 0;
}
static tree
build_dispatch_table_initializer (tree type, tree entries)
{
tree initlist = NULL_TREE;
do
{
tree elemlist = NULL_TREE;
elemlist = tree_cons (NULL_TREE,
build_selector (METHOD_SEL_NAME (entries)),
NULL_TREE);
if (! METHOD_ENCODING (entries))
METHOD_ENCODING (entries) =
encode_method_prototype (entries);
elemlist = tree_cons (NULL_TREE,
add_objc_string (METHOD_ENCODING (entries),
meth_var_types),
elemlist);
elemlist
= tree_cons (NULL_TREE,
convert (ptr_type_node,
build_unary_op (ADDR_EXPR,
METHOD_DEFINITION (entries), 1)),
elemlist);
initlist = tree_cons (NULL_TREE,
objc_build_constructor (type, nreverse (elemlist)),
initlist);
entries = TREE_CHAIN (entries);
}
while (entries);
return objc_build_constructor (build_array_type (type, 0),
nreverse (initlist));
}
static tree
build_method_template (void)
{
tree _SLT_record;
tree field_decl, field_decl_chain;
_SLT_record = start_struct (RECORD_TYPE, get_identifier (UTAG_METHOD));
field_decl = create_field_decl (objc_selector_type, "_cmd");
field_decl_chain = field_decl;
field_decl = create_field_decl (string_type_node, "method_types");
chainon (field_decl_chain, field_decl);
field_decl = create_field_decl (build_pointer_type (void_type_node),
"_imp");
chainon (field_decl_chain, field_decl);
finish_struct (_SLT_record, field_decl_chain, NULL_TREE);
return _SLT_record;
}
static tree
generate_dispatch_table (tree type, const char *name, int size, tree list)
{
tree decl, initlist;
decl = start_var_decl (type, synth_id_with_class_suffix
(name, objc_implementation_context));
initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, 0));
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, size), initlist);
initlist = tree_cons (NULL_TREE, list, initlist);
finish_var_decl (decl,
objc_build_constructor (TREE_TYPE (decl),
nreverse (initlist)));
return decl;
}
static void
mark_referenced_methods (void)
{
struct imp_entry *impent;
tree chain;
for (impent = imp_list; impent; impent = impent->next)
{
chain = CLASS_CLS_METHODS (impent->imp_context);
while (chain)
{
cgraph_mark_needed_node (cgraph_node (METHOD_DEFINITION (chain)));
chain = TREE_CHAIN (chain);
}
chain = CLASS_NST_METHODS (impent->imp_context);
while (chain)
{
cgraph_mark_needed_node (cgraph_node (METHOD_DEFINITION (chain)));
chain = TREE_CHAIN (chain);
}
}
}
static void
generate_dispatch_tables (void)
{
tree initlist, chain, method_list_template;
int size;
if (!objc_method_template)
objc_method_template = build_method_template ();
chain = CLASS_CLS_METHODS (objc_implementation_context);
if (chain)
{
size = list_length (chain);
method_list_template
= build_method_list_template (objc_method_template, size);
initlist
= build_dispatch_table_initializer (objc_method_template, chain);
UOBJC_CLASS_METHODS_decl
= generate_dispatch_table (method_list_template,
((TREE_CODE (objc_implementation_context)
== CLASS_IMPLEMENTATION_TYPE)
? "_OBJC_CLASS_METHODS"
: "_OBJC_CATEGORY_CLASS_METHODS"),
size, initlist);
}
else
UOBJC_CLASS_METHODS_decl = 0;
chain = CLASS_NST_METHODS (objc_implementation_context);
if (chain)
{
size = list_length (chain);
method_list_template
= build_method_list_template (objc_method_template, size);
initlist
= build_dispatch_table_initializer (objc_method_template, chain);
if (TREE_CODE (objc_implementation_context) == CLASS_IMPLEMENTATION_TYPE)
UOBJC_INSTANCE_METHODS_decl
= generate_dispatch_table (method_list_template,
"_OBJC_INSTANCE_METHODS",
size, initlist);
else
UOBJC_INSTANCE_METHODS_decl
= generate_dispatch_table (method_list_template,
"_OBJC_CATEGORY_INSTANCE_METHODS",
size, initlist);
}
else
UOBJC_INSTANCE_METHODS_decl = 0;
}
static tree
generate_protocol_list (tree i_or_p)
{
tree initlist;
tree refs_decl, lproto, e, plist;
int size = 0;
const char *ref_name;
if (TREE_CODE (i_or_p) == CLASS_INTERFACE_TYPE
|| TREE_CODE (i_or_p) == CATEGORY_INTERFACE_TYPE)
plist = CLASS_PROTOCOL_LIST (i_or_p);
else if (TREE_CODE (i_or_p) == PROTOCOL_INTERFACE_TYPE)
plist = PROTOCOL_LIST (i_or_p);
else
abort ();
for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto))
if (TREE_CODE (TREE_VALUE (lproto)) == PROTOCOL_INTERFACE_TYPE
&& PROTOCOL_FORWARD_DECL (TREE_VALUE (lproto)))
size++;
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), NULL_TREE);
e = build_int_cst (build_pointer_type (objc_protocol_template), size);
initlist = tree_cons (NULL_TREE, e, initlist);
for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto))
{
tree pval = TREE_VALUE (lproto);
if (TREE_CODE (pval) == PROTOCOL_INTERFACE_TYPE
&& PROTOCOL_FORWARD_DECL (pval))
{
e = build_unary_op (ADDR_EXPR, PROTOCOL_FORWARD_DECL (pval), 0);
initlist = tree_cons (NULL_TREE, e, initlist);
}
}
if (TREE_CODE (i_or_p) == PROTOCOL_INTERFACE_TYPE)
ref_name = synth_id_with_class_suffix ("_OBJC_PROTOCOL_REFS", i_or_p);
else if (TREE_CODE (i_or_p) == CLASS_INTERFACE_TYPE)
ref_name = synth_id_with_class_suffix ("_OBJC_CLASS_PROTOCOLS", i_or_p);
else if (TREE_CODE (i_or_p) == CATEGORY_INTERFACE_TYPE)
ref_name = synth_id_with_class_suffix ("_OBJC_CATEGORY_PROTOCOLS", i_or_p);
else
abort ();
refs_decl = start_var_decl
(build_array_type
(build_pointer_type (objc_protocol_template),
build_index_type (build_int_cst (NULL_TREE, size + 2))),
ref_name);
finish_var_decl (refs_decl, objc_build_constructor (TREE_TYPE (refs_decl),
nreverse (initlist)));
return refs_decl;
}
static tree
build_category_initializer (tree type, tree cat_name, tree class_name,
tree instance_methods, tree class_methods,
tree protocol_list)
{
tree initlist = NULL_TREE, expr;
initlist = tree_cons (NULL_TREE, cat_name, initlist);
initlist = tree_cons (NULL_TREE, class_name, initlist);
if (!instance_methods)
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
else
{
expr = build_unary_op (ADDR_EXPR, instance_methods, 0);
initlist = tree_cons (NULL_TREE, expr, initlist);
}
if (!class_methods)
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
else
{
expr = build_unary_op (ADDR_EXPR, class_methods, 0);
initlist = tree_cons (NULL_TREE, expr, initlist);
}
if (!protocol_list)
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
else
{
expr = convert (build_pointer_type
(build_pointer_type
(objc_protocol_template)),
build_unary_op (ADDR_EXPR, protocol_list, 0));
initlist = tree_cons (NULL_TREE, expr, initlist);
}
return objc_build_constructor (type, nreverse (initlist));
}
static tree
build_shared_structure_initializer (tree type, tree isa, tree super,
tree name, tree size, int status,
tree dispatch_table, tree ivar_list,
tree protocol_list)
{
tree initlist = NULL_TREE, expr;
initlist = tree_cons (NULL_TREE, isa, initlist);
initlist = tree_cons (NULL_TREE, super, initlist);
initlist = tree_cons (NULL_TREE, default_conversion (name), initlist);
initlist = tree_cons (NULL_TREE, build_int_cst (long_integer_type_node, 0),
initlist);
initlist = tree_cons (NULL_TREE,
build_int_cst (long_integer_type_node, status),
initlist);
initlist = tree_cons (NULL_TREE, convert (long_integer_type_node, size),
initlist);
if (!ivar_list)
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
else
{
expr = build_unary_op (ADDR_EXPR, ivar_list, 0);
initlist = tree_cons (NULL_TREE, expr, initlist);
}
if (!dispatch_table)
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
else
{
expr = build_unary_op (ADDR_EXPR, dispatch_table, 0);
initlist = tree_cons (NULL_TREE, expr, initlist);
}
if (flag_next_runtime)
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
else
{
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
}
if (! protocol_list)
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
else
{
expr = convert (build_pointer_type
(build_pointer_type
(objc_protocol_template)),
build_unary_op (ADDR_EXPR, protocol_list, 0));
initlist = tree_cons (NULL_TREE, expr, initlist);
}
if (flag_next_runtime)
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
return objc_build_constructor (type, nreverse (initlist));
}
static inline tree
lookup_category (tree class, tree cat_name)
{
tree category = CLASS_CATEGORY_LIST (class);
while (category && CLASS_SUPER_NAME (category) != cat_name)
category = CLASS_CATEGORY_LIST (category);
return category;
}
static void
generate_category (tree cat)
{
tree decl;
tree initlist, cat_name_expr, class_name_expr;
tree protocol_decl, category;
add_class_reference (CLASS_NAME (cat));
cat_name_expr = add_objc_string (CLASS_SUPER_NAME (cat), class_names);
class_name_expr = add_objc_string (CLASS_NAME (cat), class_names);
category = lookup_category (implementation_template,
CLASS_SUPER_NAME (cat));
if (category && CLASS_PROTOCOL_LIST (category))
{
generate_protocol_references (CLASS_PROTOCOL_LIST (category));
protocol_decl = generate_protocol_list (category);
}
else
protocol_decl = 0;
decl = start_var_decl (objc_category_template,
synth_id_with_class_suffix
("_OBJC_CATEGORY", objc_implementation_context));
initlist = build_category_initializer (TREE_TYPE (decl),
cat_name_expr, class_name_expr,
UOBJC_INSTANCE_METHODS_decl,
UOBJC_CLASS_METHODS_decl,
protocol_decl);
finish_var_decl (decl, initlist);
}
static void
generate_shared_structures (void)
{
tree sc_spec, decl_specs, decl;
tree name_expr, super_expr, root_expr;
tree my_root_id = NULL_TREE, my_super_id = NULL_TREE;
tree cast_type, initlist, protocol_decl;
my_super_id = CLASS_SUPER_NAME (implementation_template);
if (my_super_id)
{
add_class_reference (my_super_id);
my_root_id = my_super_id;
do
{
tree my_root_int = lookup_interface (my_root_id);
if (my_root_int && CLASS_SUPER_NAME (my_root_int))
my_root_id = CLASS_SUPER_NAME (my_root_int);
else
break;
}
while (1);
}
else
my_root_id = CLASS_NAME (implementation_template);
cast_type = build_pointer_type (objc_class_template);
name_expr = add_objc_string (CLASS_NAME (implementation_template),
class_names);
if (my_super_id)
{
super_expr = add_objc_string (my_super_id, class_names);
super_expr = build_c_cast (cast_type, super_expr);
}
else
super_expr = build_int_cst (NULL_TREE, 0);
root_expr = add_objc_string (my_root_id, class_names);
root_expr = build_c_cast (cast_type, root_expr);
if (CLASS_PROTOCOL_LIST (implementation_template))
{
generate_protocol_references
(CLASS_PROTOCOL_LIST (implementation_template));
protocol_decl = generate_protocol_list (implementation_template);
}
else
protocol_decl = 0;
sc_spec = build_tree_list (NULL_TREE, ridpointers[(int) RID_STATIC]);
decl_specs = tree_cons (NULL_TREE, objc_class_template, sc_spec);
decl = start_var_decl (objc_class_template,
IDENTIFIER_POINTER
(DECL_NAME (UOBJC_METACLASS_decl)));
initlist
= build_shared_structure_initializer
(TREE_TYPE (decl),
root_expr, super_expr, name_expr,
convert (integer_type_node, TYPE_SIZE_UNIT (objc_class_template)),
2 ,
UOBJC_CLASS_METHODS_decl,
UOBJC_CLASS_VARIABLES_decl,
protocol_decl);
finish_var_decl (decl, initlist);
decl = start_var_decl (objc_class_template,
IDENTIFIER_POINTER
(DECL_NAME (UOBJC_CLASS_decl)));
initlist
= build_shared_structure_initializer
(TREE_TYPE (decl),
build_unary_op (ADDR_EXPR, UOBJC_METACLASS_decl, 0),
super_expr, name_expr,
convert (integer_type_node,
TYPE_SIZE_UNIT (CLASS_STATIC_TEMPLATE
(implementation_template))),
1 ,
UOBJC_INSTANCE_METHODS_decl,
UOBJC_INSTANCE_VARIABLES_decl,
protocol_decl);
finish_var_decl (decl, initlist);
}
static const char *
synth_id_with_class_suffix (const char *preamble, tree ctxt)
{
static char string[BUFSIZE];
if (TREE_CODE (ctxt) == CLASS_IMPLEMENTATION_TYPE
|| TREE_CODE (ctxt) == CLASS_INTERFACE_TYPE)
{
sprintf (string, "%s_%s", preamble,
IDENTIFIER_POINTER (CLASS_NAME (ctxt)));
}
else if (TREE_CODE (ctxt) == CATEGORY_IMPLEMENTATION_TYPE
|| TREE_CODE (ctxt) == CATEGORY_INTERFACE_TYPE)
{
const char *const class_name
= IDENTIFIER_POINTER (CLASS_NAME (objc_implementation_context));
const char *const class_super_name
= IDENTIFIER_POINTER (CLASS_SUPER_NAME (objc_implementation_context));
sprintf (string, "%s_%s_%s", preamble, class_name, class_super_name);
}
else if (TREE_CODE (ctxt) == PROTOCOL_INTERFACE_TYPE)
{
const char *protocol_name = IDENTIFIER_POINTER (PROTOCOL_NAME (ctxt));
sprintf (string, "%s_%s", preamble, protocol_name);
}
else
abort ();
return string;
}
static tree
adjust_type_for_id_default (tree type)
{
if (!type)
type = make_node (TREE_LIST);
if (!TREE_VALUE (type))
TREE_VALUE (type) = objc_object_type;
else if (TREE_CODE (TREE_VALUE (type)) == RECORD_TYPE
&& TYPED_OBJECT (TREE_VALUE (type)))
error ("can not use an object as parameter to a method");
return type;
}
tree
objc_build_keyword_decl (tree key_name, tree arg_type, tree arg_name)
{
tree keyword_decl;
arg_type = adjust_type_for_id_default (arg_type);
keyword_decl = make_node (KEYWORD_DECL);
TREE_TYPE (keyword_decl) = arg_type;
KEYWORD_ARG_NAME (keyword_decl) = arg_name;
KEYWORD_KEY_NAME (keyword_decl) = key_name;
return keyword_decl;
}
static tree
build_keyword_selector (tree selector)
{
int len = 0;
tree key_chain, key_name;
char *buf;
for (key_chain = selector; key_chain; key_chain = TREE_CHAIN (key_chain))
{
if (TREE_CODE (selector) == KEYWORD_DECL)
key_name = KEYWORD_KEY_NAME (key_chain);
else if (TREE_CODE (selector) == TREE_LIST)
key_name = TREE_PURPOSE (key_chain);
else
abort ();
if (key_name)
len += IDENTIFIER_LENGTH (key_name) + 1;
else
len++;
}
buf = (char *) alloca (len + 1);
buf[0] = '\0';
for (key_chain = selector; key_chain; key_chain = TREE_CHAIN (key_chain))
{
if (TREE_CODE (selector) == KEYWORD_DECL)
key_name = KEYWORD_KEY_NAME (key_chain);
else if (TREE_CODE (selector) == TREE_LIST)
{
key_name = TREE_PURPOSE (key_chain);
TREE_PURPOSE (key_chain) = NULL_TREE;
}
else
abort ();
if (key_name)
strcat (buf, IDENTIFIER_POINTER (key_name));
strcat (buf, ":");
}
return get_identifier (buf);
}
static tree
build_method_decl (enum tree_code code, tree ret_type, tree selector,
tree add_args)
{
tree method_decl;
ret_type = adjust_type_for_id_default (ret_type);
method_decl = make_node (code);
TREE_TYPE (method_decl) = ret_type;
if (TREE_CODE (selector) == KEYWORD_DECL)
{
METHOD_SEL_NAME (method_decl) = build_keyword_selector (selector);
METHOD_SEL_ARGS (method_decl) = selector;
METHOD_ADD_ARGS (method_decl) = add_args;
}
else
{
METHOD_SEL_NAME (method_decl) = selector;
METHOD_SEL_ARGS (method_decl) = NULL_TREE;
METHOD_ADD_ARGS (method_decl) = NULL_TREE;
}
return method_decl;
}
#define METHOD_DEF 0
#define METHOD_REF 1
static tree
get_arg_type_list (tree meth, int context, int superflag)
{
tree arglist, akey;
if (flag_next_runtime && superflag)
arglist = build_tree_list (NULL_TREE, objc_super_type);
else if (context == METHOD_DEF && TREE_CODE (meth) == INSTANCE_METHOD_DECL)
arglist = build_tree_list (NULL_TREE, objc_instance_type);
else
arglist = build_tree_list (NULL_TREE, objc_object_type);
chainon (arglist, build_tree_list (NULL_TREE, objc_selector_type));
if (!meth)
return arglist;
for (akey = METHOD_SEL_ARGS (meth); akey; akey = TREE_CHAIN (akey))
{
tree arg_type = TREE_VALUE (TREE_TYPE (akey));
if (TREE_CODE (arg_type) == ARRAY_TYPE)
arg_type = build_pointer_type (TREE_TYPE (arg_type));
else if (TREE_CODE (arg_type) == FUNCTION_TYPE)
arg_type = build_pointer_type (arg_type);
chainon (arglist, build_tree_list (NULL_TREE, arg_type));
}
if (METHOD_ADD_ARGS (meth))
{
for (akey = TREE_CHAIN (METHOD_ADD_ARGS (meth));
akey; akey = TREE_CHAIN (akey))
{
tree arg_type = TREE_TYPE (TREE_VALUE (akey));
chainon (arglist, build_tree_list (NULL_TREE, arg_type));
}
if (!TREE_OVERFLOW (METHOD_ADD_ARGS (meth)))
goto lack_of_ellipsis;
}
else
{
lack_of_ellipsis:
chainon (arglist, OBJC_VOID_AT_END);
}
return arglist;
}
static tree
check_duplicates (hash hsh, int methods, int is_class)
{
tree meth = NULL_TREE;
if (hsh)
{
meth = hsh->key;
if (hsh->list)
{
attr loop;
warning ("multiple %s named %<%c%s%> found",
methods ? "methods" : "selectors",
(is_class ? '+' : '-'),
IDENTIFIER_POINTER (METHOD_SEL_NAME (meth)));
warn_with_method (methods ? "using" : "found",
((TREE_CODE (meth) == INSTANCE_METHOD_DECL)
? '-'
: '+'),
meth);
for (loop = hsh->list; loop; loop = loop->next)
warn_with_method ("also found",
((TREE_CODE (loop->value) == INSTANCE_METHOD_DECL)
? '-'
: '+'),
loop->value);
}
}
return meth;
}
static tree
receiver_is_class_object (tree receiver, int self, int super)
{
tree chain, exp, arg;
if (objc_method_context
&& TREE_CODE (objc_method_context) == CLASS_METHOD_DECL
&& (self || super))
return (super
? CLASS_SUPER_NAME (implementation_template)
: CLASS_NAME (implementation_template));
if (flag_next_runtime)
{
if (TREE_CODE (receiver) == VAR_DECL && IS_CLASS (TREE_TYPE (receiver)))
for (chain = cls_ref_chain; chain; chain = TREE_CHAIN (chain))
if (TREE_PURPOSE (chain) == receiver)
return TREE_VALUE (chain);
}
if (TREE_CODE (receiver) == CALL_EXPR
&& (exp = TREE_OPERAND (receiver, 0))
&& TREE_CODE (exp) == ADDR_EXPR
&& (exp = TREE_OPERAND (exp, 0))
&& TREE_CODE (exp) == FUNCTION_DECL
&& TREE_TYPE (exp) == TREE_TYPE (objc_get_class_decl)
&& !strcmp (IDENTIFIER_POINTER (DECL_NAME (exp)), TAG_GETCLASS)
&& (arg = TREE_OPERAND (receiver, 1))
&& TREE_CODE (arg) == TREE_LIST
&& (arg = TREE_VALUE (arg)))
{
STRIP_NOPS (arg);
if (TREE_CODE (arg) == ADDR_EXPR
&& (arg = TREE_OPERAND (arg, 0))
&& TREE_CODE (arg) == STRING_CST)
return get_identifier (TREE_STRING_POINTER (arg));
}
return 0;
}
static tree current_objc_message_selector = 0;
tree
objc_message_selector (void)
{
return current_objc_message_selector;
}
tree
objc_build_message_expr (tree mess)
{
tree receiver = TREE_PURPOSE (mess);
tree sel_name;
#ifdef OBJCPLUS
tree args = TREE_PURPOSE (TREE_VALUE (mess));
#else
tree args = TREE_VALUE (mess);
#endif
tree method_params = NULL_TREE;
if (TREE_CODE (receiver) == ERROR_MARK)
return error_mark_node;
if (TREE_CODE (args) == IDENTIFIER_NODE)
sel_name = args;
else if (TREE_CODE (args) == TREE_LIST)
sel_name = build_keyword_selector (args);
else
abort ();
if (TREE_CODE (args) == TREE_LIST)
#ifdef OBJCPLUS
method_params = chainon (args, TREE_VALUE (TREE_VALUE (mess)));
#else
{
tree chain = args, prev = NULL_TREE;
while (chain)
{
tree element = TREE_VALUE (chain);
if (TREE_CODE (element) == TREE_LIST)
{
if (prev)
TREE_CHAIN (prev) = element;
else
args = element;
}
prev = chain;
chain = TREE_CHAIN (chain);
}
method_params = args;
}
#endif
#ifdef OBJCPLUS
if (processing_template_decl)
return build_min_nt (MESSAGE_SEND_EXPR, receiver, sel_name,
method_params);
#endif
return objc_finish_message_expr (receiver, sel_name, method_params);
}
static tree
lookup_method_in_hash_lists (tree sel_name, int is_class)
{
hash method_prototype = NULL;
if (!is_class)
method_prototype = hash_lookup (nst_method_hash_list,
sel_name);
if (!method_prototype)
{
method_prototype = hash_lookup (cls_method_hash_list,
sel_name);
is_class = 1;
}
return check_duplicates (method_prototype, 1, is_class);
}
tree
objc_finish_message_expr (tree receiver, tree sel_name, tree method_params)
{
tree method_prototype = NULL_TREE, rprotos = NULL_TREE, rtype;
tree selector, retval, class_tree;
int self, super, have_cast;
rtype = receiver;
while (TREE_CODE (rtype) == COMPOUND_EXPR
|| TREE_CODE (rtype) == MODIFY_EXPR
|| TREE_CODE (rtype) == NOP_EXPR
|| TREE_CODE (rtype) == CONVERT_EXPR
|| TREE_CODE (rtype) == COMPONENT_REF)
rtype = TREE_OPERAND (rtype, 0);
self = (rtype == self_decl);
super = (rtype == UOBJC_SUPER_decl);
rtype = TREE_TYPE (receiver);
have_cast = (TREE_CODE (receiver) == NOP_EXPR
|| (TREE_CODE (receiver) == COMPOUND_EXPR
&& !IS_SUPER (rtype)));
class_tree = receiver_is_class_object (receiver, self, super);
if (!have_cast)
{
if (class_tree)
rtype = lookup_interface (class_tree);
else if (super)
{
if (!CLASS_SUPER_NAME (implementation_template))
{
error ("no super class declared in @interface for %qs",
IDENTIFIER_POINTER (CLASS_NAME (implementation_template)));
return error_mark_node;
}
rtype = lookup_interface (CLASS_SUPER_NAME (implementation_template));
}
else if (self)
rtype = lookup_interface (CLASS_NAME (implementation_template));
}
if (!rtype || objc_is_id (rtype))
{
if (!rtype)
rtype = xref_tag (RECORD_TYPE, class_tree);
else
{
class_tree = (IS_CLASS (rtype) ? objc_class_name : NULL_TREE);
rprotos = (TYPE_HAS_OBJC_INFO (TREE_TYPE (rtype))
? TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rtype))
: NULL_TREE);
rtype = NULL_TREE;
}
if (rprotos)
{
method_prototype
= lookup_method_in_protocol_list (rprotos, sel_name,
class_tree != NULL_TREE);
if (!method_prototype && !rtype && class_tree != NULL_TREE)
{
method_prototype
= lookup_method_in_protocol_list (rprotos, sel_name, 0);
if (method_prototype)
warning ("found %<-%s%> instead of %<+%s%> in protocol(s)",
IDENTIFIER_POINTER (sel_name),
IDENTIFIER_POINTER (sel_name));
}
}
}
else
{
tree orig_rtype = rtype, saved_rtype;
if (TREE_CODE (rtype) == POINTER_TYPE)
rtype = TREE_TYPE (rtype);
while (TREE_CODE (rtype) == RECORD_TYPE && OBJC_TYPE_NAME (rtype)
&& TREE_CODE (OBJC_TYPE_NAME (rtype)) == TYPE_DECL
&& DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (rtype)))
rtype = DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (rtype));
saved_rtype = rtype;
if (TYPED_OBJECT (rtype))
{
rprotos = TYPE_OBJC_PROTOCOL_LIST (rtype);
rtype = TYPE_OBJC_INTERFACE (rtype);
}
if (!rtype || TREE_CODE (rtype) == IDENTIFIER_NODE)
rtype = saved_rtype;
else if (TREE_CODE (rtype) == CLASS_INTERFACE_TYPE
|| TREE_CODE (rtype) == CLASS_IMPLEMENTATION_TYPE)
{
method_prototype
= lookup_method_static (rtype, sel_name, class_tree != NULL_TREE);
if (!method_prototype && objc_implementation_context
&& CLASS_NAME (objc_implementation_context)
== OBJC_TYPE_NAME (rtype))
method_prototype
= lookup_method
((class_tree
? CLASS_CLS_METHODS (objc_implementation_context)
: CLASS_NST_METHODS (objc_implementation_context)),
sel_name);
if (!method_prototype && rprotos)
method_prototype
= lookup_method_in_protocol_list (rprotos, sel_name,
class_tree != NULL_TREE);
}
else
{
warning ("invalid receiver type %qs",
gen_type_name (orig_rtype));
rtype = rprotos = NULL_TREE;
}
}
if (!method_prototype)
{
if (rprotos)
warning ("%<%c%s%> not found in protocol(s)",
(class_tree ? '+' : '-'),
IDENTIFIER_POINTER (sel_name));
if (!rtype)
method_prototype
= lookup_method_in_hash_lists (sel_name, class_tree != NULL_TREE);
}
if (!method_prototype)
{
static bool warn_missing_methods = false;
if (rtype)
warning ("%qs may not respond to %<%c%s%>",
IDENTIFIER_POINTER (OBJC_TYPE_NAME (rtype)),
(class_tree ? '+' : '-'),
IDENTIFIER_POINTER (sel_name));
else
warning ("no %<%c%s%> method found",
(class_tree ? '+' : '-'),
IDENTIFIER_POINTER (sel_name));
if (!warn_missing_methods)
{
warning ("(Messages without a matching method signature");
warning ("will be assumed to return %<id%> and accept");
warning ("%<...%> as arguments.)");
warn_missing_methods = true;
}
}
current_objc_message_selector = sel_name;
if (flag_typed_selectors)
selector = build_typed_selector_reference (sel_name, method_prototype);
else
selector = build_selector_reference (sel_name);
retval = build_objc_method_call (super, method_prototype,
receiver,
selector, method_params);
current_objc_message_selector = 0;
return retval;
}
static tree
build_objc_method_call (int super_flag, tree method_prototype,
tree lookup_object, tree selector,
tree method_params)
{
tree sender = (super_flag ? umsg_super_decl :
(!flag_next_runtime || flag_nil_receivers
? umsg_decl
: umsg_nonnil_decl));
tree rcv_p = (super_flag ? objc_super_type : objc_object_type);
tree ret_type
= (method_prototype
? TREE_VALUE (TREE_TYPE (method_prototype))
: objc_object_type);
tree sender_cast
= build_pointer_type
(build_function_type
(ret_type,
get_arg_type_list
(method_prototype, METHOD_REF, super_flag)));
tree method, t;
lookup_object = build_c_cast (rcv_p, lookup_object);
lookup_object = save_expr (lookup_object);
if (flag_next_runtime)
{
if (!targetm.calls.struct_value_rtx (0, 0)
&& (TREE_CODE (ret_type) == RECORD_TYPE
|| TREE_CODE (ret_type) == UNION_TYPE)
&& targetm.calls.return_in_memory (ret_type, 0))
sender = (super_flag ? umsg_super_stret_decl :
flag_nil_receivers ? umsg_stret_decl : umsg_nonnil_stret_decl);
method_params = tree_cons (NULL_TREE, lookup_object,
tree_cons (NULL_TREE, selector,
method_params));
method = build_fold_addr_expr (sender);
}
else
{
tree object;
object = (super_flag ? self_decl : lookup_object);
t = tree_cons (NULL_TREE, selector, NULL_TREE);
t = tree_cons (NULL_TREE, lookup_object, t);
method = build_function_call (sender, t);
method_params = tree_cons (NULL_TREE, object,
tree_cons (NULL_TREE, selector,
method_params));
}
t = build (OBJ_TYPE_REF, sender_cast, method, lookup_object, size_zero_node);
return build_function_call (t, method_params);
}
static void
build_protocol_reference (tree p)
{
tree decl;
const char *proto_name;
proto_name = synth_id_with_class_suffix ("_OBJC_PROTOCOL", p);
decl = start_var_decl (objc_protocol_template, proto_name);
PROTOCOL_FORWARD_DECL (p) = decl;
}
tree
objc_build_protocol_expr (tree protoname)
{
tree expr;
tree p = lookup_protocol (protoname);
if (!p)
{
error ("cannot find protocol declaration for %qs",
IDENTIFIER_POINTER (protoname));
return error_mark_node;
}
if (!PROTOCOL_FORWARD_DECL (p))
build_protocol_reference (p);
expr = build_unary_op (ADDR_EXPR, PROTOCOL_FORWARD_DECL (p), 0);
expr = convert (objc_protocol_type, expr);
if (! flag_next_runtime)
{
tree protocol_struct_type = xref_tag
(RECORD_TYPE, get_identifier (PROTOCOL_OBJECT_CLASS_NAME));
tree *chain;
for (chain = &objc_static_instances;
*chain && TREE_VALUE (*chain) != protocol_struct_type;
chain = &TREE_CHAIN (*chain));
if (!*chain)
{
*chain = tree_cons (NULL_TREE, protocol_struct_type, NULL_TREE);
add_objc_string (OBJC_TYPE_NAME (protocol_struct_type),
class_names);
}
TREE_PURPOSE (*chain) = tree_cons (NULL_TREE,
PROTOCOL_FORWARD_DECL (p),
TREE_PURPOSE (*chain));
}
return expr;
}
tree
objc_build_selector_expr (tree selnamelist)
{
tree selname;
if (TREE_CODE (selnamelist) == IDENTIFIER_NODE)
selname = selnamelist;
else if (TREE_CODE (selnamelist) == TREE_LIST)
selname = build_keyword_selector (selnamelist);
else
abort ();
if (warn_undeclared_selector)
{
hash hsh;
hsh = hash_lookup (nst_method_hash_list, selname);
if (!hsh)
{
hsh = hash_lookup (cls_method_hash_list, selname);
}
if (!hsh)
{
warning ("undeclared selector %qs", IDENTIFIER_POINTER (selname));
}
}
if (flag_typed_selectors)
return build_typed_selector_reference (selname, 0);
else
return build_selector_reference (selname);
}
tree
objc_build_encode_expr (tree type)
{
tree result;
const char *string;
encode_type (type, obstack_object_size (&util_obstack),
OBJC_ENCODE_INLINE_DEFS);
obstack_1grow (&util_obstack, 0);
string = obstack_finish (&util_obstack);
result = my_build_string (strlen (string) + 1, string);
obstack_free (&util_obstack, util_firstobj);
return result;
}
static tree
build_ivar_reference (tree id)
{
if (TREE_CODE (objc_method_context) == CLASS_METHOD_DECL)
{
warning ("instance variable %qs accessed in class method",
IDENTIFIER_POINTER (id));
self_decl = convert (objc_instance_type, self_decl);
}
return build_component_ref (build_indirect_ref (self_decl, "->"), id);
}
static size_t
hash_func (tree sel_name)
{
const unsigned char *s
= (const unsigned char *)IDENTIFIER_POINTER (sel_name);
size_t h = 0;
while (*s)
h = h * 67 + *s++ - 113;
return h;
}
static void
hash_init (void)
{
nst_method_hash_list
= (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash));
cls_method_hash_list
= (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash));
string_htab = htab_create_ggc (31, string_hash,
string_eq, NULL);
}
static void
hash_enter (hash *hashlist, tree method)
{
hash obj;
int slot = hash_func (METHOD_SEL_NAME (method)) % SIZEHASHTABLE;
obj = (hash) ggc_alloc (sizeof (struct hashed_entry));
obj->list = 0;
obj->next = hashlist[slot];
obj->key = method;
hashlist[slot] = obj;
}
static hash
hash_lookup (hash *hashlist, tree sel_name)
{
hash target;
target = hashlist[hash_func (sel_name) % SIZEHASHTABLE];
while (target)
{
if (sel_name == METHOD_SEL_NAME (target->key))
return target;
target = target->next;
}
return 0;
}
static void
hash_add_attr (hash entry, tree value)
{
attr obj;
obj = (attr) ggc_alloc (sizeof (struct hashed_attribute));
obj->next = entry->list;
obj->value = value;
entry->list = obj;
}
static tree
lookup_method (tree mchain, tree method)
{
tree key;
if (TREE_CODE (method) == IDENTIFIER_NODE)
key = method;
else
key = METHOD_SEL_NAME (method);
while (mchain)
{
if (METHOD_SEL_NAME (mchain) == key)
return mchain;
mchain = TREE_CHAIN (mchain);
}
return NULL_TREE;
}
static tree
lookup_method_static (tree interface, tree ident, int is_class)
{
tree meth = NULL_TREE, root_inter = NULL_TREE;
tree inter = interface;
while (inter)
{
tree chain = is_class ? CLASS_CLS_METHODS (inter) : CLASS_NST_METHODS (inter);
tree category = inter;
if ((meth = lookup_method (chain, ident)))
return meth;
while ((category = CLASS_CATEGORY_LIST (category)))
{
chain = is_class ? CLASS_CLS_METHODS (category) : CLASS_NST_METHODS (category);
if ((meth = lookup_method (chain, ident)))
return meth;
if (CLASS_PROTOCOL_LIST (category))
{
if ((meth = (lookup_method_in_protocol_list
(CLASS_PROTOCOL_LIST (category), ident, is_class))))
return meth;
}
}
if (CLASS_PROTOCOL_LIST (inter))
{
if ((meth = (lookup_method_in_protocol_list
(CLASS_PROTOCOL_LIST (inter), ident, is_class))))
return meth;
}
root_inter = inter;
inter = lookup_interface (CLASS_SUPER_NAME (inter));
}
while (inter);
return is_class ? lookup_method_static (root_inter, ident, 0): NULL_TREE;
}
static void
add_method_to_hash_list (hash *hash_list, tree method)
{
hash hsh;
if (!(hsh = hash_lookup (hash_list, METHOD_SEL_NAME (method))))
{
hash_enter (hash_list, method);
}
else
{
attr loop;
int already_there = comp_proto_with_proto (method, hsh->key);
for (loop = hsh->list; !already_there && loop; loop = loop->next)
already_there |= comp_proto_with_proto (method, loop->value);
if (!already_there)
hash_add_attr (hsh, method);
}
}
static tree
objc_add_method (tree class, tree method, int is_class)
{
tree mth;
if (!(mth = lookup_method (is_class
? CLASS_CLS_METHODS (class)
: CLASS_NST_METHODS (class), method)))
{
if (is_class)
{
TREE_CHAIN (method) = CLASS_CLS_METHODS (class);
CLASS_CLS_METHODS (class) = method;
}
else
{
TREE_CHAIN (method) = CLASS_NST_METHODS (class);
CLASS_NST_METHODS (class) = method;
}
}
else
{
if ((TREE_CODE (class) == CLASS_INTERFACE_TYPE
|| TREE_CODE (class) == CATEGORY_INTERFACE_TYPE)
&& !comp_proto_with_proto (method, mth))
error ("duplicate declaration of method %<%c%s%>",
is_class ? '+' : '-',
IDENTIFIER_POINTER (METHOD_SEL_NAME (mth)));
}
if (is_class)
add_method_to_hash_list (cls_method_hash_list, method);
else
{
add_method_to_hash_list (nst_method_hash_list, method);
if (TREE_CODE (class) == CATEGORY_INTERFACE_TYPE
|| TREE_CODE (class) == CATEGORY_IMPLEMENTATION_TYPE)
class = lookup_interface (CLASS_NAME (class));
if (TREE_CODE (class) == PROTOCOL_INTERFACE_TYPE
|| !CLASS_SUPER_NAME (class))
add_method_to_hash_list (cls_method_hash_list, method);
}
return method;
}
static tree
add_class (tree class)
{
TREE_CHAIN (class) = interface_chain;
interface_chain = class;
return interface_chain;
}
static void
add_category (tree class, tree category)
{
tree cat = lookup_category (class, CLASS_SUPER_NAME (category));
if (cat)
{
warning ("duplicate interface declaration for category %<%s(%s)%>",
IDENTIFIER_POINTER (CLASS_NAME (class)),
IDENTIFIER_POINTER (CLASS_SUPER_NAME (category)));
}
else
{
CLASS_CATEGORY_LIST (category) = CLASS_CATEGORY_LIST (class);
CLASS_CATEGORY_LIST (class) = category;
}
}
static tree
add_instance_variable (tree class, int public, tree field_decl)
{
tree field_type = TREE_TYPE (field_decl);
const char *ivar_name = DECL_NAME (field_decl)
? IDENTIFIER_POINTER (DECL_NAME (field_decl))
: "<unnamed>";
#ifdef OBJCPLUS
if (TREE_CODE (field_type) == REFERENCE_TYPE)
{
error ("illegal reference type specified for instance variable %qs",
ivar_name);
return class;
}
#endif
if (field_type == error_mark_node || !TYPE_SIZE (field_type)
|| TYPE_SIZE (field_type) == error_mark_node)
{
error ("instance variable %qs has unknown size", ivar_name);
return class;
}
#ifdef OBJCPLUS
if(IS_AGGR_TYPE (field_type) && (TYPE_NEEDS_CONSTRUCTING (field_type)
|| TYPE_HAS_NONTRIVIAL_DESTRUCTOR (field_type) || TYPE_POLYMORPHIC_P (field_type)))
{
const char *type_name = IDENTIFIER_POINTER (OBJC_TYPE_NAME (field_type));
if(TYPE_POLYMORPHIC_P (field_type)) {
error ("type %qs has virtual member functions", type_name);
error ("illegal aggregate type %qs specified for instance variable %qs",
type_name, ivar_name);
return class;
}
if (TYPE_NEEDS_CONSTRUCTING (field_type))
warning ("type %qs has a user-defined constructor", type_name);
if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (field_type))
warning ("type %qs has a user-defined destructor", type_name);
warning ("C++ constructors and destructors will not be invoked for Objective-C fields");
}
#endif
switch (public)
{
case 0:
TREE_PUBLIC (field_decl) = 0;
TREE_PRIVATE (field_decl) = 0;
TREE_PROTECTED (field_decl) = 1;
break;
case 1:
TREE_PUBLIC (field_decl) = 1;
TREE_PRIVATE (field_decl) = 0;
TREE_PROTECTED (field_decl) = 0;
break;
case 2:
TREE_PUBLIC (field_decl) = 0;
TREE_PRIVATE (field_decl) = 1;
TREE_PROTECTED (field_decl) = 0;
break;
}
CLASS_RAW_IVARS (class) = chainon (CLASS_RAW_IVARS (class), field_decl);
return class;
}
static tree
is_ivar (tree decl_chain, tree ident)
{
for ( ; decl_chain; decl_chain = TREE_CHAIN (decl_chain))
if (DECL_NAME (decl_chain) == ident)
return decl_chain;
return NULL_TREE;
}
static int
is_private (tree decl)
{
return (TREE_PRIVATE (decl)
&& ! is_ivar (CLASS_IVARS (implementation_template),
DECL_NAME (decl)));
}
int
objc_is_public (tree expr, tree identifier)
{
tree basetype = TREE_TYPE (expr);
enum tree_code code = TREE_CODE (basetype);
tree decl;
if (code == RECORD_TYPE)
{
if (TYPE_HAS_OBJC_INFO (basetype) && TYPE_OBJC_INTERFACE (basetype))
{
if (TREE_CODE (TYPE_OBJC_INTERFACE (basetype)) == IDENTIFIER_NODE)
{
error ("cannot find interface declaration for %qs",
IDENTIFIER_POINTER (OBJC_TYPE_NAME (basetype)));
return 0;
}
if ((decl = is_ivar (TYPE_FIELDS (basetype), identifier)))
{
if (TREE_PUBLIC (decl))
return 1;
if (objc_implementation_context
&& (((TREE_CODE (objc_implementation_context)
== CLASS_IMPLEMENTATION_TYPE)
|| (TREE_CODE (objc_implementation_context)
== CATEGORY_IMPLEMENTATION_TYPE))
&& (CLASS_NAME (objc_implementation_context)
== OBJC_TYPE_NAME (basetype))))
{
int private = is_private (decl);
if (private)
error ("instance variable %qs is declared private",
IDENTIFIER_POINTER (DECL_NAME (decl)));
return !private;
}
if (!objc_method_context)
{
warning ("instance variable %qs is %s; "
"this will be a hard error in the future",
IDENTIFIER_POINTER (identifier),
TREE_PRIVATE (decl) ? "@private" : "@protected");
return 1;
}
error ("instance variable %qs is declared %s",
IDENTIFIER_POINTER (identifier),
TREE_PRIVATE (decl) ? "private" : "protected");
return 0;
}
}
else if (objc_implementation_context && (basetype == objc_object_reference))
{
expr = convert (uprivate_record, expr);
warning ("static access to object of type %<id%>");
}
}
return 1;
}
static int
check_methods (tree chain, tree list, int mtype)
{
int first = 1;
while (chain)
{
if (!lookup_method (list, chain))
{
if (first)
{
if (TREE_CODE (objc_implementation_context)
== CLASS_IMPLEMENTATION_TYPE)
warning ("incomplete implementation of class %qs",
IDENTIFIER_POINTER (CLASS_NAME (objc_implementation_context)));
else if (TREE_CODE (objc_implementation_context)
== CATEGORY_IMPLEMENTATION_TYPE)
warning ("incomplete implementation of category %qs",
IDENTIFIER_POINTER (CLASS_SUPER_NAME (objc_implementation_context)));
first = 0;
}
warning ("method definition for %<%c%s%> not found",
mtype, IDENTIFIER_POINTER (METHOD_SEL_NAME (chain)));
}
chain = TREE_CHAIN (chain);
}
return first;
}
static int
conforms_to_protocol (tree class, tree protocol)
{
if (TREE_CODE (protocol) == PROTOCOL_INTERFACE_TYPE)
{
tree p = CLASS_PROTOCOL_LIST (class);
while (p && TREE_VALUE (p) != protocol)
p = TREE_CHAIN (p);
if (!p)
{
tree super = (CLASS_SUPER_NAME (class)
? lookup_interface (CLASS_SUPER_NAME (class))
: NULL_TREE);
int tmp = super ? conforms_to_protocol (super, protocol) : 0;
if (!tmp)
return 0;
}
}
return 1;
}
static int
check_methods_accessible (tree chain, tree context, int mtype)
{
int first = 1;
tree list;
tree base_context = context;
while (chain)
{
context = base_context;
while (context)
{
if (mtype == '+')
list = CLASS_CLS_METHODS (context);
else
list = CLASS_NST_METHODS (context);
if (lookup_method (list, chain))
break;
else if (TREE_CODE (context) == CLASS_IMPLEMENTATION_TYPE
|| TREE_CODE (context) == CLASS_INTERFACE_TYPE)
context = (CLASS_SUPER_NAME (context)
? lookup_interface (CLASS_SUPER_NAME (context))
: NULL_TREE);
else if (TREE_CODE (context) == CATEGORY_IMPLEMENTATION_TYPE
|| TREE_CODE (context) == CATEGORY_INTERFACE_TYPE)
context = (CLASS_NAME (context)
? lookup_interface (CLASS_NAME (context))
: NULL_TREE);
else
abort ();
}
if (context == NULL_TREE)
{
if (first)
{
if (TREE_CODE (objc_implementation_context)
== CLASS_IMPLEMENTATION_TYPE)
warning ("incomplete implementation of class %qs",
IDENTIFIER_POINTER
(CLASS_NAME (objc_implementation_context)));
else if (TREE_CODE (objc_implementation_context)
== CATEGORY_IMPLEMENTATION_TYPE)
warning ("incomplete implementation of category %qs",
IDENTIFIER_POINTER
(CLASS_SUPER_NAME (objc_implementation_context)));
first = 0;
}
warning ("method definition for %<%c%s%> not found",
mtype, IDENTIFIER_POINTER (METHOD_SEL_NAME (chain)));
}
chain = TREE_CHAIN (chain);
}
return first;
}
static void
check_protocol (tree p, const char *type, const char *name)
{
if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE)
{
int f1, f2;
if (warn_protocol)
{
f1 = check_methods (PROTOCOL_CLS_METHODS (p),
CLASS_CLS_METHODS (objc_implementation_context),
'+');
f2 = check_methods (PROTOCOL_NST_METHODS (p),
CLASS_NST_METHODS (objc_implementation_context),
'-');
}
else
{
f1 = check_methods_accessible (PROTOCOL_CLS_METHODS (p),
objc_implementation_context,
'+');
f2 = check_methods_accessible (PROTOCOL_NST_METHODS (p),
objc_implementation_context,
'-');
}
if (!f1 || !f2)
warning ("%s %qs does not fully implement the %qs protocol",
type, name, IDENTIFIER_POINTER (PROTOCOL_NAME (p)));
}
if (PROTOCOL_LIST (p))
{
tree subs = PROTOCOL_LIST (p);
tree super_class =
lookup_interface (CLASS_SUPER_NAME (implementation_template));
while (subs)
{
tree sub = TREE_VALUE (subs);
if (!super_class || !conforms_to_protocol (super_class, sub))
check_protocol (sub, type, name);
subs = TREE_CHAIN (subs);
}
}
}
static void
check_protocols (tree proto_list, const char *type, const char *name)
{
for ( ; proto_list; proto_list = TREE_CHAIN (proto_list))
{
tree p = TREE_VALUE (proto_list);
check_protocol (p, type, name);
}
}
static tree
start_class (enum tree_code code, tree class_name, tree super_name,
tree protocol_list)
{
tree class, decl;
#ifdef OBJCPLUS
if (current_namespace != global_namespace) {
error ("Objective-C declarations may only appear in global scope");
}
#endif
if (objc_implementation_context)
{
warning ("%<@end%> missing in implementation context");
finish_class (objc_implementation_context);
objc_ivar_chain = NULL_TREE;
objc_implementation_context = NULL_TREE;
}
class = make_node (code);
TYPE_LANG_SLOT_1 (class) = make_tree_vec (CLASS_LANG_SLOT_ELTS);
if ((code == CLASS_INTERFACE_TYPE || code == CLASS_IMPLEMENTATION_TYPE)
&& super_name && !objc_is_class_name (super_name))
{
error ("cannot find interface declaration for %qs, superclass of %qs",
IDENTIFIER_POINTER (super_name),
IDENTIFIER_POINTER (class_name));
super_name = NULL_TREE;
}
CLASS_NAME (class) = class_name;
CLASS_SUPER_NAME (class) = super_name;
CLASS_CLS_METHODS (class) = NULL_TREE;
if (! objc_is_class_name (class_name)
&& (decl = lookup_name (class_name)))
{
error ("%qs redeclared as different kind of symbol",
IDENTIFIER_POINTER (class_name));
error ("%Jprevious declaration of '%D'",
decl, decl);
}
if (code == CLASS_IMPLEMENTATION_TYPE)
{
{
tree chain;
for (chain = implemented_classes; chain; chain = TREE_CHAIN (chain))
if (TREE_VALUE (chain) == class_name)
{
error ("reimplementation of class %qs",
IDENTIFIER_POINTER (class_name));
return error_mark_node;
}
implemented_classes = tree_cons (NULL_TREE, class_name,
implemented_classes);
}
method_slot = 0;
objc_implementation_context = class;
if (!(implementation_template = lookup_interface (class_name)))
{
warning ("cannot find interface declaration for %qs",
IDENTIFIER_POINTER (class_name));
add_class (implementation_template = objc_implementation_context);
}
if (super_name
&& (super_name != CLASS_SUPER_NAME (implementation_template)))
{
tree previous_name = CLASS_SUPER_NAME (implementation_template);
const char *const name =
previous_name ? IDENTIFIER_POINTER (previous_name) : "";
error ("conflicting super class name %qs",
IDENTIFIER_POINTER (super_name));
error ("previous declaration of %qs", name);
}
else if (! super_name)
{
CLASS_SUPER_NAME (objc_implementation_context)
= CLASS_SUPER_NAME (implementation_template);
}
}
else if (code == CLASS_INTERFACE_TYPE)
{
if (lookup_interface (class_name))
#ifdef OBJCPLUS
error ("duplicate interface declaration for class %qs",
#else
warning ("duplicate interface declaration for class %qs",
#endif
IDENTIFIER_POINTER (class_name));
else
add_class (class);
if (protocol_list)
CLASS_PROTOCOL_LIST (class)
= lookup_and_install_protocols (protocol_list);
}
else if (code == CATEGORY_INTERFACE_TYPE)
{
tree class_category_is_assoc_with;
if (!(class_category_is_assoc_with = lookup_interface (class_name)))
{
error ("cannot find interface declaration for %qs",
IDENTIFIER_POINTER (class_name));
exit (FATAL_EXIT_CODE);
}
else
add_category (class_category_is_assoc_with, class);
if (protocol_list)
CLASS_PROTOCOL_LIST (class)
= lookup_and_install_protocols (protocol_list);
}
else if (code == CATEGORY_IMPLEMENTATION_TYPE)
{
method_slot = 0;
objc_implementation_context = class;
if (!(implementation_template = lookup_interface (class_name)))
{
error ("cannot find interface declaration for %qs",
IDENTIFIER_POINTER (class_name));
exit (FATAL_EXIT_CODE);
}
}
return class;
}
static tree
continue_class (tree class)
{
if (TREE_CODE (class) == CLASS_IMPLEMENTATION_TYPE
|| TREE_CODE (class) == CATEGORY_IMPLEMENTATION_TYPE)
{
struct imp_entry *imp_entry;
tree ivar_context;
if (CLASS_RAW_IVARS (class))
check_ivars (implementation_template, class);
#ifdef OBJCPLUS
push_lang_context (lang_name_c);
#endif
build_private_template (implementation_template);
uprivate_record = CLASS_STATIC_TEMPLATE (implementation_template);
ivar_context = TYPE_FIELDS (uprivate_record);
objc_instance_type = build_pointer_type (uprivate_record);
imp_entry = (struct imp_entry *) ggc_alloc (sizeof (struct imp_entry));
imp_entry->next = imp_list;
imp_entry->imp_context = class;
imp_entry->imp_template = implementation_template;
synth_forward_declarations ();
imp_entry->class_decl = UOBJC_CLASS_decl;
imp_entry->meta_decl = UOBJC_METACLASS_decl;
imp_list = imp_entry;
if (TREE_CODE (class) == CLASS_IMPLEMENTATION_TYPE)
imp_count++;
else
cat_count++;
#ifdef OBJCPLUS
pop_lang_context ();
#endif
return ivar_context;
}
else if (TREE_CODE (class) == CLASS_INTERFACE_TYPE)
{
#ifdef OBJCPLUS
push_lang_context (lang_name_c);
#endif
build_private_template (class);
#ifdef OBJCPLUS
pop_lang_context ();
#endif
return NULL_TREE;
}
else
return error_mark_node;
}
static void
finish_class (tree class)
{
if (TREE_CODE (class) == CLASS_IMPLEMENTATION_TYPE)
{
if (implementation_template != objc_implementation_context)
{
check_methods (CLASS_CLS_METHODS (implementation_template),
CLASS_CLS_METHODS (objc_implementation_context), '+');
check_methods (CLASS_NST_METHODS (implementation_template),
CLASS_NST_METHODS (objc_implementation_context), '-');
if (CLASS_PROTOCOL_LIST (implementation_template))
check_protocols (CLASS_PROTOCOL_LIST (implementation_template),
"class",
IDENTIFIER_POINTER (CLASS_NAME (objc_implementation_context)));
}
}
else if (TREE_CODE (class) == CATEGORY_IMPLEMENTATION_TYPE)
{
tree category = lookup_category (implementation_template, CLASS_SUPER_NAME (class));
if (category)
{
check_methods (CLASS_CLS_METHODS (category),
CLASS_CLS_METHODS (objc_implementation_context), '+');
check_methods (CLASS_NST_METHODS (category),
CLASS_NST_METHODS (objc_implementation_context), '-');
if (CLASS_PROTOCOL_LIST (category))
check_protocols (CLASS_PROTOCOL_LIST (category),
"category",
IDENTIFIER_POINTER (CLASS_SUPER_NAME (objc_implementation_context)));
}
}
}
static tree
add_protocol (tree protocol)
{
TREE_CHAIN (protocol) = protocol_chain;
protocol_chain = protocol;
return protocol_chain;
}
static tree
lookup_protocol (tree ident)
{
tree chain;
for (chain = protocol_chain; chain; chain = TREE_CHAIN (chain))
if (ident == PROTOCOL_NAME (chain))
return chain;
return NULL_TREE;
}
void
objc_declare_protocols (tree names)
{
tree list;
#ifdef OBJCPLUS
if (current_namespace != global_namespace) {
error ("Objective-C declarations may only appear in global scope");
}
#endif
for (list = names; list; list = TREE_CHAIN (list))
{
tree name = TREE_VALUE (list);
if (lookup_protocol (name) == NULL_TREE)
{
tree protocol = make_node (PROTOCOL_INTERFACE_TYPE);
TYPE_LANG_SLOT_1 (protocol)
= make_tree_vec (PROTOCOL_LANG_SLOT_ELTS);
PROTOCOL_NAME (protocol) = name;
PROTOCOL_LIST (protocol) = NULL_TREE;
add_protocol (protocol);
PROTOCOL_DEFINED (protocol) = 0;
PROTOCOL_FORWARD_DECL (protocol) = NULL_TREE;
}
}
}
static tree
start_protocol (enum tree_code code, tree name, tree list)
{
tree protocol;
#ifdef OBJCPLUS
if (current_namespace != global_namespace) {
error ("Objective-C declarations may only appear in global scope");
}
#endif
protocol = lookup_protocol (name);
if (!protocol)
{
protocol = make_node (code);
TYPE_LANG_SLOT_1 (protocol) = make_tree_vec (PROTOCOL_LANG_SLOT_ELTS);
PROTOCOL_NAME (protocol) = name;
PROTOCOL_LIST (protocol) = lookup_and_install_protocols (list);
add_protocol (protocol);
PROTOCOL_DEFINED (protocol) = 1;
PROTOCOL_FORWARD_DECL (protocol) = NULL_TREE;
check_protocol_recursively (protocol, list);
}
else if (! PROTOCOL_DEFINED (protocol))
{
PROTOCOL_DEFINED (protocol) = 1;
PROTOCOL_LIST (protocol) = lookup_and_install_protocols (list);
check_protocol_recursively (protocol, list);
}
else
{
warning ("duplicate declaration for protocol %qs",
IDENTIFIER_POINTER (name));
}
return protocol;
}
static void
encode_type_qualifiers (tree declspecs)
{
tree spec;
for (spec = declspecs; spec; spec = TREE_CHAIN (spec))
{
if (ridpointers[(int) RID_IN] == TREE_VALUE (spec))
obstack_1grow (&util_obstack, 'n');
else if (ridpointers[(int) RID_INOUT] == TREE_VALUE (spec))
obstack_1grow (&util_obstack, 'N');
else if (ridpointers[(int) RID_OUT] == TREE_VALUE (spec))
obstack_1grow (&util_obstack, 'o');
else if (ridpointers[(int) RID_BYCOPY] == TREE_VALUE (spec))
obstack_1grow (&util_obstack, 'O');
else if (ridpointers[(int) RID_BYREF] == TREE_VALUE (spec))
obstack_1grow (&util_obstack, 'R');
else if (ridpointers[(int) RID_ONEWAY] == TREE_VALUE (spec))
obstack_1grow (&util_obstack, 'V');
}
}
static void
encode_pointer (tree type, int curtype, int format)
{
tree pointer_to = TREE_TYPE (type);
if (TREE_CODE (pointer_to) == RECORD_TYPE)
{
if (OBJC_TYPE_NAME (pointer_to)
&& TREE_CODE (OBJC_TYPE_NAME (pointer_to)) == IDENTIFIER_NODE)
{
const char *name = IDENTIFIER_POINTER (OBJC_TYPE_NAME (pointer_to));
if (strcmp (name, TAG_OBJECT) == 0)
{
obstack_1grow (&util_obstack, '@');
return;
}
else if (TYPE_HAS_OBJC_INFO (pointer_to)
&& TYPE_OBJC_INTERFACE (pointer_to))
{
if (generating_instance_variables)
{
obstack_1grow (&util_obstack, '@');
obstack_1grow (&util_obstack, '"');
obstack_grow (&util_obstack, name, strlen (name));
obstack_1grow (&util_obstack, '"');
return;
}
else
{
obstack_1grow (&util_obstack, '@');
return;
}
}
else if (strcmp (name, TAG_CLASS) == 0)
{
obstack_1grow (&util_obstack, '#');
return;
}
else if (strcmp (name, TAG_SELECTOR) == 0)
{
obstack_1grow (&util_obstack, ':');
return;
}
}
}
else if (TREE_CODE (pointer_to) == INTEGER_TYPE
&& TYPE_MODE (pointer_to) == QImode)
{
tree pname = TREE_CODE (OBJC_TYPE_NAME (pointer_to)) == IDENTIFIER_NODE
? OBJC_TYPE_NAME (pointer_to)
: DECL_NAME (OBJC_TYPE_NAME (pointer_to));
if (!flag_next_runtime || strcmp (IDENTIFIER_POINTER (pname), "BOOL"))
{
if (TYPE_READONLY (pointer_to))
obstack_1grow (&util_obstack, 'r');
obstack_1grow (&util_obstack, '*');
return;
}
}
obstack_1grow (&util_obstack, '^');
encode_type (pointer_to, curtype, format);
}
static void
encode_array (tree type, int curtype, int format)
{
tree an_int_cst = TYPE_SIZE (type);
tree array_of = TREE_TYPE (type);
char buffer[40];
if (an_int_cst == NULL)
{
encode_pointer (type, curtype, format);
return;
}
sprintf (buffer, "[" HOST_WIDE_INT_PRINT_DEC,
(TREE_INT_CST_LOW (an_int_cst)
/ TREE_INT_CST_LOW (TYPE_SIZE (array_of))));
obstack_grow (&util_obstack, buffer, strlen (buffer));
encode_type (array_of, curtype, format);
obstack_1grow (&util_obstack, ']');
return;
}
static void
encode_aggregate_within (tree type, int curtype, int format, int left,
int right)
{
tree name;
int pointed_to
= (obstack_object_size (&util_obstack) > 0
&& *(obstack_next_free (&util_obstack) - 1) == '^');
int inline_contents
= ((format == OBJC_ENCODE_INLINE_DEFS || generating_instance_variables)
&& (!pointed_to || obstack_object_size (&util_obstack) - curtype == 1));
type = TYPE_MAIN_VARIANT (type);
name = OBJC_TYPE_NAME (type);
obstack_1grow (&util_obstack, left);
if (name && TREE_CODE (name) == IDENTIFIER_NODE
#ifdef OBJCPLUS
&& !TYPE_WAS_ANONYMOUS (type)
#endif
)
obstack_grow (&util_obstack,
IDENTIFIER_POINTER (name),
strlen (IDENTIFIER_POINTER (name)));
else
obstack_1grow (&util_obstack, '?');
if (inline_contents)
{
tree fields = TYPE_FIELDS (type);
obstack_1grow (&util_obstack, '=');
for (; fields; fields = TREE_CHAIN (fields))
{
#ifdef OBJCPLUS
if (TREE_CODE (fields) != FIELD_DECL || TREE_STATIC (fields))
continue;
#endif
if (generating_instance_variables && !pointed_to)
{
tree fname = DECL_NAME (fields);
obstack_1grow (&util_obstack, '"');
if (fname && TREE_CODE (fname) == IDENTIFIER_NODE)
obstack_grow (&util_obstack,
IDENTIFIER_POINTER (fname),
strlen (IDENTIFIER_POINTER (fname)));
obstack_1grow (&util_obstack, '"');
}
encode_field_decl (fields, curtype, format);
}
}
obstack_1grow (&util_obstack, right);
}
static void
encode_aggregate (tree type, int curtype, int format)
{
enum tree_code code = TREE_CODE (type);
switch (code)
{
case RECORD_TYPE:
{
encode_aggregate_within (type, curtype, format, '{', '}');
break;
}
case UNION_TYPE:
{
encode_aggregate_within (type, curtype, format, '(', ')');
break;
}
case ENUMERAL_TYPE:
obstack_1grow (&util_obstack, 'i');
break;
default:
break;
}
}
static void
encode_next_bitfield (int width)
{
char buffer[40];
sprintf (buffer, "b%d", width);
obstack_grow (&util_obstack, buffer, strlen (buffer));
}
static void
encode_type (tree type, int curtype, int format)
{
enum tree_code code = TREE_CODE (type);
char c;
if (TYPE_READONLY (type))
obstack_1grow (&util_obstack, 'r');
if (code == INTEGER_TYPE)
{
switch (GET_MODE_BITSIZE (TYPE_MODE (type)))
{
case 8: c = TYPE_UNSIGNED (type) ? 'C' : 'c'; break;
case 16: c = TYPE_UNSIGNED (type) ? 'S' : 's'; break;
case 32:
if (type == long_unsigned_type_node
|| type == long_integer_type_node)
c = TYPE_UNSIGNED (type) ? 'L' : 'l';
else
c = TYPE_UNSIGNED (type) ? 'I' : 'i';
break;
case 64: c = TYPE_UNSIGNED (type) ? 'Q' : 'q'; break;
default: abort ();
}
obstack_1grow (&util_obstack, c);
}
else if (code == REAL_TYPE)
{
switch (GET_MODE_BITSIZE (TYPE_MODE (type)))
{
case 32: c = 'f'; break;
case 64:
case 96:
case 128: c = 'd'; break;
default: abort ();
}
obstack_1grow (&util_obstack, c);
}
else if (code == VOID_TYPE)
obstack_1grow (&util_obstack, 'v');
else if (code == BOOLEAN_TYPE)
obstack_1grow (&util_obstack, 'B');
else if (code == ARRAY_TYPE)
encode_array (type, curtype, format);
else if (code == POINTER_TYPE)
encode_pointer (type, curtype, format);
else if (code == RECORD_TYPE || code == UNION_TYPE || code == ENUMERAL_TYPE)
encode_aggregate (type, curtype, format);
else if (code == FUNCTION_TYPE)
obstack_1grow (&util_obstack, '?');
}
static void
encode_gnu_bitfield (int position, tree type, int size)
{
enum tree_code code = TREE_CODE (type);
char buffer[40];
char charType = '?';
if (code == INTEGER_TYPE)
{
if (integer_zerop (TYPE_MIN_VALUE (type)))
{
if (TYPE_MODE (type) == QImode)
charType = 'C';
else if (TYPE_MODE (type) == HImode)
charType = 'S';
else if (TYPE_MODE (type) == SImode)
{
if (type == long_unsigned_type_node)
charType = 'L';
else
charType = 'I';
}
else if (TYPE_MODE (type) == DImode)
charType = 'Q';
}
else
{
if (TYPE_MODE (type) == QImode)
charType = 'c';
else if (TYPE_MODE (type) == HImode)
charType = 's';
else if (TYPE_MODE (type) == SImode)
{
if (type == long_integer_type_node)
charType = 'l';
else
charType = 'i';
}
else if (TYPE_MODE (type) == DImode)
charType = 'q';
}
}
else if (code == ENUMERAL_TYPE)
charType = 'i';
else
abort ();
sprintf (buffer, "b%d%c%d", position, charType, size);
obstack_grow (&util_obstack, buffer, strlen (buffer));
}
static void
encode_field_decl (tree field_decl, int curtype, int format)
{
tree type;
#ifdef OBJCPLUS
if (TREE_CODE (field_decl) != FIELD_DECL || TREE_STATIC (field_decl))
return;
#endif
type = TREE_TYPE (field_decl);
if (DECL_BIT_FIELD_TYPE (field_decl))
{
int size = tree_low_cst (DECL_SIZE (field_decl), 1);
if (flag_next_runtime)
encode_next_bitfield (size);
else
encode_gnu_bitfield (int_bit_position (field_decl),
DECL_BIT_FIELD_TYPE (field_decl), size);
}
else
encode_type (TREE_TYPE (field_decl), curtype, format);
}
static GTY(()) tree objc_parmlist = NULL_TREE;
static void
objc_push_parm (tree parm)
{
if (TREE_CODE (TREE_TYPE (parm)) == ARRAY_TYPE)
TREE_TYPE (parm) = build_pointer_type (TREE_TYPE (TREE_TYPE (parm)));
else if (TREE_CODE (TREE_TYPE (parm)) == FUNCTION_TYPE)
TREE_TYPE (parm) = build_pointer_type (TREE_TYPE (parm));
DECL_ARG_TYPE_AS_WRITTEN (parm) = TREE_TYPE (parm);
DECL_ARG_TYPE (parm)
= lang_hooks.types.type_promotes_to (TREE_TYPE (parm));
c_apply_type_quals_to_decl
((TYPE_READONLY (TREE_TYPE (parm)) ? TYPE_QUAL_CONST : 0)
| (TYPE_RESTRICT (TREE_TYPE (parm)) ? TYPE_QUAL_RESTRICT : 0)
| (TYPE_VOLATILE (TREE_TYPE (parm)) ? TYPE_QUAL_VOLATILE : 0), parm);
objc_parmlist = chainon (objc_parmlist, parm);
}
#ifdef OBJCPLUS
static tree
objc_get_parm_info (int have_ellipsis ATTRIBUTE_UNUSED)
#else
static struct c_arg_info *
objc_get_parm_info (int have_ellipsis)
#endif
{
#ifdef OBJCPLUS
tree parm_info = objc_parmlist;
objc_parmlist = NULL_TREE;
return parm_info;
#else
tree parm_info = objc_parmlist;
struct c_arg_info *arg_info;
push_scope ();
declare_parm_level ();
while (parm_info)
{
tree next = TREE_CHAIN (parm_info);
TREE_CHAIN (parm_info) = NULL_TREE;
parm_info = pushdecl (parm_info);
finish_decl (parm_info, NULL_TREE, NULL_TREE);
parm_info = next;
}
arg_info = get_parm_info (have_ellipsis);
pop_scope ();
objc_parmlist = NULL_TREE;
return arg_info;
#endif
}
static void
synth_self_and_ucmd_args (void)
{
tree self_type;
if (objc_method_context
&& TREE_CODE (objc_method_context) == INSTANCE_METHOD_DECL)
self_type = objc_instance_type;
else
self_type = objc_object_type;
objc_push_parm (build_decl (PARM_DECL, self_id, self_type));
objc_push_parm (build_decl (PARM_DECL, ucmd_id, objc_selector_type));
}
static void
start_method_def (tree method)
{
tree parmlist;
#ifdef OBJCPLUS
tree parm_info;
#else
struct c_arg_info *parm_info;
#endif
int have_ellipsis = 0;
objc_method_context = method;
UOBJC_SUPER_decl = NULL_TREE;
synth_self_and_ucmd_args ();
parmlist = METHOD_SEL_ARGS (method);
while (parmlist)
{
tree type = TREE_VALUE (TREE_TYPE (parmlist)), parm;
parm = build_decl (PARM_DECL, KEYWORD_ARG_NAME (parmlist), type);
objc_push_parm (parm);
parmlist = TREE_CHAIN (parmlist);
}
if (METHOD_ADD_ARGS (method))
{
tree akey;
for (akey = TREE_CHAIN (METHOD_ADD_ARGS (method));
akey; akey = TREE_CHAIN (akey))
{
objc_push_parm (TREE_VALUE (akey));
}
if (TREE_OVERFLOW (METHOD_ADD_ARGS (method)))
have_ellipsis = 1;
}
parm_info = objc_get_parm_info (have_ellipsis);
really_start_method (objc_method_context, parm_info);
}
static void
warn_with_method (const char *message, int mtype, tree method)
{
warning ("%J%s %<%c%s%>", method,
message, mtype, gen_method_decl (method));
}
static int
objc_types_are_equivalent (tree type1, tree type2)
{
if (type1 == type2)
return 1;
while ((TREE_CODE (type1) == ARRAY_TYPE || TREE_CODE (type1) == POINTER_TYPE)
&& (TREE_CODE (type1) == TREE_CODE (type2)))
type1 = TREE_TYPE (type1), type2 = TREE_TYPE (type2);
if (TYPE_MAIN_VARIANT (type1) != TYPE_MAIN_VARIANT (type2))
return 0;
type1 = (TYPE_HAS_OBJC_INFO (type1)
? TYPE_OBJC_PROTOCOL_LIST (type1)
: NULL_TREE);
type2 = (TYPE_HAS_OBJC_INFO (type2)
? TYPE_OBJC_PROTOCOL_LIST (type2)
: NULL_TREE);
if (list_length (type1) == list_length (type2))
{
for (; type2; type2 = TREE_CHAIN (type2))
if (!lookup_protocol_in_reflist (type1, TREE_VALUE (type2)))
return 0;
return 1;
}
return 0;
}
static int
comp_proto_with_proto (tree proto1, tree proto2)
{
tree type1, type2;
if (METHOD_SEL_NAME (proto1) != METHOD_SEL_NAME (proto2))
return 0;
type1 = TREE_VALUE (TREE_TYPE (proto1));
type2 = TREE_VALUE (TREE_TYPE (proto2));
if (!objc_types_are_equivalent (type1, type2))
return 0;
for (type1 = get_arg_type_list (proto1, METHOD_REF, 0),
type2 = get_arg_type_list (proto2, METHOD_REF, 0);
type1 && type2;
type1 = TREE_CHAIN (type1), type2 = TREE_CHAIN (type2))
{
if (!objc_types_are_equivalent (TREE_VALUE (type1), TREE_VALUE (type2)))
return 0;
}
return (!type1 && !type2);
}
tree
#ifdef OBJCPLUS
objc_fold_obj_type_ref (tree ref, tree known_type)
#else
objc_fold_obj_type_ref (tree ref ATTRIBUTE_UNUSED,
tree known_type ATTRIBUTE_UNUSED)
#endif
{
#ifdef OBJCPLUS
tree v = BINFO_VIRTUALS (TYPE_BINFO (known_type));
if (!v)
return NULL_TREE;
return cp_fold_obj_type_ref (ref, known_type);
#else
return NULL_TREE;
#endif
}
static void
objc_start_function (tree name, tree type, tree attrs,
#ifdef OBJCPLUS
tree params
#else
struct c_arg_info *params
#endif
)
{
tree fndecl = build_decl (FUNCTION_DECL, name, type);
#ifdef OBJCPLUS
DECL_ARGUMENTS (fndecl) = params;
DECL_INITIAL (fndecl) = error_mark_node;
DECL_EXTERNAL (fndecl) = 0;
TREE_STATIC (fndecl) = 1;
retrofit_lang_decl (fndecl);
cplus_decl_attributes (&fndecl, attrs, 0);
start_preparsed_function (fndecl, attrs, SF_DEFAULT);
#else
struct c_label_context *nstack;
nstack = XOBNEW (&parser_obstack, struct c_label_context);
nstack->labels_def = NULL;
nstack->labels_used = NULL;
nstack->next = label_context_stack;
label_context_stack = nstack;
decl_attributes (&fndecl, attrs, 0);
announce_function (fndecl);
DECL_INITIAL (fndecl) = error_mark_node;
DECL_EXTERNAL (fndecl) = 0;
TREE_STATIC (fndecl) = 1;
current_function_decl = pushdecl (fndecl);
push_scope ();
declare_parm_level ();
DECL_RESULT (current_function_decl)
= build_decl (RESULT_DECL, NULL_TREE,
TREE_TYPE (TREE_TYPE (current_function_decl)));
DECL_ARTIFICIAL (DECL_RESULT (current_function_decl)) = 1;
DECL_IGNORED_P (DECL_RESULT (current_function_decl)) = 1;
start_fname_decls ();
store_parm_decls_from (params);
#endif
TREE_USED (current_function_decl) = 1;
}
static void
really_start_method (tree method,
#ifdef OBJCPLUS
tree parmlist
#else
struct c_arg_info *parmlist
#endif
)
{
tree ret_type, meth_type;
tree method_id;
const char *sel_name, *class_name, *cat_name;
char *buf;
ret_type = TREE_VALUE (TREE_TYPE (method));
sel_name = IDENTIFIER_POINTER (METHOD_SEL_NAME (method));
class_name = IDENTIFIER_POINTER (CLASS_NAME (objc_implementation_context));
cat_name = ((TREE_CODE (objc_implementation_context)
== CLASS_IMPLEMENTATION_TYPE)
? NULL
: IDENTIFIER_POINTER (CLASS_SUPER_NAME (objc_implementation_context)));
method_slot++;
buf = (char *) alloca (50 + strlen (sel_name) + strlen (class_name)
+ (cat_name ? strlen (cat_name) : 0));
OBJC_GEN_METHOD_LABEL (buf, TREE_CODE (method) == INSTANCE_METHOD_DECL,
class_name, cat_name, sel_name, method_slot);
method_id = get_identifier (buf);
#ifdef OBJCPLUS
push_lang_context (lang_name_c);
#endif
meth_type
= build_function_type (ret_type,
get_arg_type_list (method, METHOD_DEF, 0));
objc_start_function (method_id, meth_type, NULL_TREE, parmlist);
self_decl = DECL_ARGUMENTS (current_function_decl);
TREE_USED (self_decl) = 1;
TREE_USED (TREE_CHAIN (self_decl)) = 1;
#ifdef OBJCPLUS
pop_lang_context ();
#endif
METHOD_DEFINITION (method) = current_function_decl;
if (implementation_template != objc_implementation_context)
{
tree proto
= lookup_method_static (implementation_template,
METHOD_SEL_NAME (method),
TREE_CODE (method) == CLASS_METHOD_DECL);
if (proto)
{
if (!comp_proto_with_proto (method, proto))
{
char type = (TREE_CODE (method) == INSTANCE_METHOD_DECL ? '-' : '+');
warn_with_method ("conflicting types for", type, method);
warn_with_method ("previous declaration of", type, proto);
}
}
else
{
tree interface = implementation_template;
if (TREE_CODE (objc_implementation_context)
== CATEGORY_IMPLEMENTATION_TYPE)
interface = lookup_category
(interface,
CLASS_SUPER_NAME (objc_implementation_context));
if (interface)
objc_add_method (interface, copy_node (method),
TREE_CODE (method) == CLASS_METHOD_DECL);
}
}
}
static void *UOBJC_SUPER_scope = 0;
static tree
get_super_receiver (void)
{
if (objc_method_context)
{
tree super_expr, super_expr_list;
if (!UOBJC_SUPER_decl)
{
UOBJC_SUPER_decl = build_decl (VAR_DECL, get_identifier (TAG_SUPER),
objc_super_template);
TREE_USED (UOBJC_SUPER_decl) = 1;
lang_hooks.decls.pushdecl (UOBJC_SUPER_decl);
finish_decl (UOBJC_SUPER_decl, NULL_TREE, NULL_TREE);
UOBJC_SUPER_scope = objc_get_current_scope ();
}
super_expr = build_component_ref (UOBJC_SUPER_decl, self_id);
super_expr = build_modify_expr (super_expr, NOP_EXPR, self_decl);
super_expr_list = super_expr;
super_expr = build_component_ref (UOBJC_SUPER_decl,
get_identifier ("super_class"));
if (TREE_CODE (objc_implementation_context) == CLASS_IMPLEMENTATION_TYPE)
{
super_expr = build_modify_expr (super_expr, NOP_EXPR,
((TREE_CODE (objc_method_context)
== INSTANCE_METHOD_DECL)
? ucls_super_ref
: uucls_super_ref));
}
else
{
tree super_name = CLASS_SUPER_NAME (implementation_template);
tree super_class;
if (!super_name)
{
error ("no super class declared in interface for %qs",
IDENTIFIER_POINTER (CLASS_NAME (implementation_template)));
return error_mark_node;
}
if (flag_next_runtime && !flag_zero_link)
{
super_class = objc_get_class_reference (super_name);
if (TREE_CODE (objc_method_context) == CLASS_METHOD_DECL)
super_class
= build_indirect_ref
(build_c_cast (build_pointer_type (objc_class_type),
super_class), "unary *");
}
else
{
add_class_reference (super_name);
super_class = (TREE_CODE (objc_method_context) == INSTANCE_METHOD_DECL
? objc_get_class_decl : objc_get_meta_class_decl);
assemble_external (super_class);
super_class
= build_function_call
(super_class,
build_tree_list
(NULL_TREE,
my_build_string (IDENTIFIER_LENGTH (super_name) + 1,
IDENTIFIER_POINTER (super_name))));
}
super_expr
= build_modify_expr (super_expr, NOP_EXPR,
build_c_cast (TREE_TYPE (super_expr),
super_class));
}
super_expr_list = build_compound_expr (super_expr_list, super_expr);
super_expr = build_unary_op (ADDR_EXPR, UOBJC_SUPER_decl, 0);
super_expr_list = build_compound_expr (super_expr_list, super_expr);
return super_expr_list;
}
else
{
error ("[super ...] must appear in a method context");
return error_mark_node;
}
}
void
objc_clear_super_receiver (void)
{
if (objc_method_context
&& UOBJC_SUPER_scope == objc_get_current_scope ()) {
UOBJC_SUPER_decl = 0;
UOBJC_SUPER_scope = 0;
}
}
void
objc_finish_method_definition (tree fndecl)
{
DECL_INLINE (fndecl) = 0;
DECL_UNINLINABLE (fndecl) = 1;
#ifndef OBJCPLUS
finish_function ();
#endif
METHOD_ENCODING (objc_method_context)
= encode_method_prototype (objc_method_context);
objc_method_context = NULL_TREE;
}
#if 0
int
lang_report_error_function (tree decl)
{
if (objc_method_context)
{
fprintf (stderr, "In method %qs\n",
IDENTIFIER_POINTER (METHOD_SEL_NAME (objc_method_context)));
return 1;
}
else
return 0;
}
#endif
static char *
gen_declaration (tree decl)
{
errbuf[0] = '\0';
if (DECL_P (decl))
{
gen_type_name_0 (TREE_TYPE (decl));
if (DECL_NAME (decl))
{
if (!POINTER_TYPE_P (TREE_TYPE (decl)))
strcat (errbuf, " ");
strcat (errbuf, IDENTIFIER_POINTER (DECL_NAME (decl)));
}
if (DECL_INITIAL (decl)
&& TREE_CODE (DECL_INITIAL (decl)) == INTEGER_CST)
sprintf (errbuf + strlen (errbuf), ": " HOST_WIDE_INT_PRINT_DEC,
TREE_INT_CST_LOW (DECL_INITIAL (decl)));
}
return errbuf;
}
static char *
gen_type_name_0 (tree type)
{
tree orig = type, proto;
if (TYPE_P (type) && TYPE_NAME (type))
type = TYPE_NAME (type);
else if (POINTER_TYPE_P (type) || TREE_CODE (type) == ARRAY_TYPE)
{
tree inner = TREE_TYPE (type);
while (TREE_CODE (inner) == ARRAY_TYPE)
inner = TREE_TYPE (inner);
gen_type_name_0 (inner);
if (!POINTER_TYPE_P (inner))
strcat (errbuf, " ");
if (POINTER_TYPE_P (type))
strcat (errbuf, "*");
else
while (type != inner)
{
strcat (errbuf, "[");
if (TYPE_DOMAIN (type))
{
char sz[20];
sprintf (sz, HOST_WIDE_INT_PRINT_DEC,
(TREE_INT_CST_LOW
(TYPE_MAX_VALUE (TYPE_DOMAIN (type))) + 1));
strcat (errbuf, sz);
}
strcat (errbuf, "]");
type = TREE_TYPE (type);
}
goto exit_function;
}
if (TREE_CODE (type) == TYPE_DECL && DECL_NAME (type))
type = DECL_NAME (type);
strcat (errbuf, IDENTIFIER_POINTER (type));
if (objc_is_id (orig))
orig = TREE_TYPE (orig);
proto = TYPE_HAS_OBJC_INFO (orig) ? TYPE_OBJC_PROTOCOL_LIST (orig) : NULL_TREE;
if (proto)
{
strcat (errbuf, " <");
while (proto) {
strcat (errbuf,
IDENTIFIER_POINTER (PROTOCOL_NAME (TREE_VALUE (proto))));
proto = TREE_CHAIN (proto);
strcat (errbuf, proto ? ", " : ">");
}
}
exit_function:
return errbuf;
}
static char *
gen_type_name (tree type)
{
errbuf[0] = '\0';
return gen_type_name_0 (type);
}
static char *
gen_method_decl (tree method)
{
tree chain;
strcpy (errbuf, "(");
gen_type_name_0 (TREE_VALUE (TREE_TYPE (method)));
strcat (errbuf, ")");
chain = METHOD_SEL_ARGS (method);
if (chain)
{
do
{
if (KEYWORD_KEY_NAME (chain))
strcat (errbuf, IDENTIFIER_POINTER (KEYWORD_KEY_NAME (chain)));
strcat (errbuf, ":(");
gen_type_name_0 (TREE_VALUE (TREE_TYPE (chain)));
strcat (errbuf, ")");
strcat (errbuf, IDENTIFIER_POINTER (KEYWORD_ARG_NAME (chain)));
if ((chain = TREE_CHAIN (chain)))
strcat (errbuf, " ");
}
while (chain);
if (METHOD_ADD_ARGS (method))
{
chain = TREE_CHAIN (METHOD_ADD_ARGS (method));
while (chain)
{
strcat (errbuf, ", ");
gen_type_name_0 (TREE_TYPE (TREE_VALUE (chain)));
chain = TREE_CHAIN (chain);
}
if (TREE_OVERFLOW (METHOD_ADD_ARGS (method)))
strcat (errbuf, ", ...");
}
}
else
strcat (errbuf, IDENTIFIER_POINTER (METHOD_SEL_NAME (method)));
return errbuf;
}
static void
dump_interface (FILE *fp, tree chain)
{
const char *my_name = IDENTIFIER_POINTER (CLASS_NAME (chain));
tree ivar_decls = CLASS_RAW_IVARS (chain);
tree nst_methods = CLASS_NST_METHODS (chain);
tree cls_methods = CLASS_CLS_METHODS (chain);
fprintf (fp, "\n@interface %s", my_name);
if (CLASS_SUPER_NAME (chain))
{
const char *name = IDENTIFIER_POINTER (CLASS_SUPER_NAME (chain));
if (TREE_CODE (chain) == CATEGORY_IMPLEMENTATION_TYPE
|| TREE_CODE (chain) == CATEGORY_INTERFACE_TYPE)
{
fprintf (fp, " (%s)\n", name);
}
else
{
fprintf (fp, " : %s\n", name);
}
}
else
fprintf (fp, "\n");
if (ivar_decls)
{
fprintf (fp, "{\n");
do
{
fprintf (fp, "\t%s;\n", gen_declaration (ivar_decls));
ivar_decls = TREE_CHAIN (ivar_decls);
}
while (ivar_decls);
fprintf (fp, "}\n");
}
while (nst_methods)
{
fprintf (fp, "- %s;\n", gen_method_decl (nst_methods));
nst_methods = TREE_CHAIN (nst_methods);
}
while (cls_methods)
{
fprintf (fp, "+ %s;\n", gen_method_decl (cls_methods));
cls_methods = TREE_CHAIN (cls_methods);
}
fprintf (fp, "@end\n");
}
static const char *
objc_demangle (const char *mangled)
{
char *demangled, *cp;
if (mangled[0] == '_' &&
(mangled[1] == 'i' || mangled[1] == 'c') &&
mangled[2] == '_')
{
cp = demangled = xmalloc(strlen(mangled) + 2);
if (mangled[1] == 'i')
*cp++ = '-';
else
*cp++ = '+';
*cp++ = '[';
strcpy(cp, mangled+3);
while (*cp && *cp == '_')
cp++;
cp = strchr(cp, '_');
if (cp == NULL)
{
free(demangled);
return mangled;
}
if (cp[1] == '_')
{
*cp++ = ' ';
strcpy(cp, mangled + (cp - demangled) + 2);
}
else
{
*cp++ = '(';
cp = strchr(cp, '_');
if (cp == 0)
{
free(demangled);
return mangled;
}
*cp++ = ')';
*cp++ = ' ';
strcpy(cp, mangled + (cp - demangled));
}
while (*cp && *cp == '_')
cp++;
for (; *cp; cp++)
if (*cp == '_')
*cp = ':';
*cp++ = ']';
*cp++ = 0;
return demangled;
}
else
return mangled;
}
const char *
objc_printable_name (tree decl, int kind ATTRIBUTE_UNUSED)
{
return objc_demangle (IDENTIFIER_POINTER (DECL_NAME (decl)));
}
static void
init_objc (void)
{
gcc_obstack_init (&util_obstack);
util_firstobj = (char *) obstack_finish (&util_obstack);
errbuf = (char *) xmalloc (1024 * 10);
hash_init ();
synth_module_prologue ();
}
static void
finish_objc (void)
{
struct imp_entry *impent;
tree chain;
int save_warn_missing_braces = warn_missing_braces;
warn_missing_braces = 0;
if (objc_implementation_context)
{
warning ("%<@end%> missing in implementation context");
finish_class (objc_implementation_context);
objc_ivar_chain = NULL_TREE;
objc_implementation_context = NULL_TREE;
}
if (objc_static_instances)
generate_static_references ();
if (imp_list || class_names_chain
|| meth_var_names_chain || meth_var_types_chain || sel_ref_chain)
generate_objc_symtab_decl ();
for (impent = imp_list; impent; impent = impent->next)
{
objc_implementation_context = impent->imp_context;
implementation_template = impent->imp_template;
UOBJC_CLASS_decl = impent->class_decl;
UOBJC_METACLASS_decl = impent->meta_decl;
if (flag_gen_declaration)
{
dump_interface (gen_declaration_file, objc_implementation_context);
}
if (TREE_CODE (objc_implementation_context) == CLASS_IMPLEMENTATION_TYPE)
{
generate_ivar_lists ();
generate_dispatch_tables ();
generate_shared_structures ();
}
else
{
generate_dispatch_tables ();
generate_category (objc_implementation_context);
}
}
if (! flag_next_runtime || sel_ref_chain)
build_selector_translation_table ();
if (protocol_chain)
generate_protocols ();
if (flag_replace_objc_classes && imp_list)
generate_objc_image_info ();
if (objc_implementation_context || class_names_chain || objc_static_instances
|| meth_var_names_chain || meth_var_types_chain || sel_ref_chain)
{
build_module_descriptor ();
if (!flag_next_runtime)
build_module_initializer_routine ();
}
for (chain = cls_ref_chain; chain; chain = TREE_CHAIN (chain))
{
handle_class_ref (chain);
if (TREE_PURPOSE (chain))
generate_classref_translation_entry (chain);
}
for (impent = imp_list; impent; impent = impent->next)
handle_impent (impent);
generate_strings ();
if (warn_selector)
{
int slot;
hash hsh;
for (slot = 0; slot < SIZEHASHTABLE; slot++)
{
for (hsh = cls_method_hash_list[slot]; hsh; hsh = hsh->next)
check_duplicates (hsh, 0, 1);
for (hsh = nst_method_hash_list[slot]; hsh; hsh = hsh->next)
check_duplicates (hsh, 0, 1);
}
}
warn_missing_braces = save_warn_missing_braces;
}
static void
generate_classref_translation_entry (tree chain)
{
tree expr, decl, type;
decl = TREE_PURPOSE (chain);
type = TREE_TYPE (decl);
expr = add_objc_string (TREE_VALUE (chain), class_names);
expr = convert (type, expr);
finish_var_decl (decl, expr);
return;
}
static void
handle_class_ref (tree chain)
{
const char *name = IDENTIFIER_POINTER (TREE_VALUE (chain));
char *string = (char *) alloca (strlen (name) + 30);
tree decl;
tree exp;
sprintf (string, "%sobjc_class_name_%s",
(flag_next_runtime ? "." : "__"), name);
#ifdef ASM_DECLARE_UNRESOLVED_REFERENCE
if (flag_next_runtime)
{
ASM_DECLARE_UNRESOLVED_REFERENCE (asm_out_file, string);
return;
}
#endif
decl = build_decl (VAR_DECL, get_identifier (string), char_type_node);
DECL_EXTERNAL (decl) = 1;
TREE_PUBLIC (decl) = 1;
pushdecl (decl);
rest_of_decl_compilation (decl, 0, 0);
sprintf (string, "%sobjc_class_ref_%s",
(flag_next_runtime ? "." : "__"), name);
exp = build1 (ADDR_EXPR, string_type_node, decl);
decl = build_decl (VAR_DECL, get_identifier (string), string_type_node);
DECL_INITIAL (decl) = exp;
TREE_STATIC (decl) = 1;
TREE_USED (decl) = 1;
pushdecl (decl);
rest_of_decl_compilation (decl, 0, 0);
}
static void
handle_impent (struct imp_entry *impent)
{
char *string;
objc_implementation_context = impent->imp_context;
implementation_template = impent->imp_template;
if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE)
{
const char *const class_name =
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context));
string = (char *) alloca (strlen (class_name) + 30);
sprintf (string, "%sobjc_class_name_%s",
(flag_next_runtime ? "." : "__"), class_name);
}
else if (TREE_CODE (impent->imp_context) == CATEGORY_IMPLEMENTATION_TYPE)
{
const char *const class_name =
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context));
const char *const class_super_name =
IDENTIFIER_POINTER (CLASS_SUPER_NAME (impent->imp_context));
string = (char *) alloca (strlen (class_name)
+ strlen (class_super_name) + 30);
sprintf (string, "*%sobjc_category_name_%s_%s",
(flag_next_runtime ? "." : "__"), class_name, class_super_name);
}
else
return;
#ifdef ASM_DECLARE_CLASS_REFERENCE
if (flag_next_runtime)
{
ASM_DECLARE_CLASS_REFERENCE (asm_out_file, string);
return;
}
else
#endif
{
tree decl, init;
init = build_int_cst (c_common_type_for_size (BITS_PER_WORD, 1), 0);
decl = build_decl (VAR_DECL, get_identifier (string), TREE_TYPE (init));
TREE_PUBLIC (decl) = 1;
TREE_READONLY (decl) = 1;
TREE_USED (decl) = 1;
TREE_CONSTANT (decl) = 1;
DECL_CONTEXT (decl) = 0;
DECL_ARTIFICIAL (decl) = 1;
DECL_INITIAL (decl) = init;
assemble_variable (decl, 1, 0, 0);
}
}
static void
generate_objc_image_info (void)
{
tree decl, initlist;
decl = start_var_decl (build_array_type
(integer_type_node,
build_index_type (build_int_cst (NULL_TREE, 2 - 1))),
"_OBJC_IMAGE_INFO");
initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, 0));
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 1), initlist);
initlist = objc_build_constructor (TREE_TYPE (decl), nreverse (initlist));
finish_var_decl (decl, initlist);
}
tree
objc_lookup_ivar (tree other, tree id)
{
tree ivar;
if (!objc_method_context)
return other;
if (!strcmp (IDENTIFIER_POINTER (id), "super"))
return get_super_receiver ();
if (TREE_CODE (objc_method_context) == CLASS_METHOD_DECL
&& other && other != error_mark_node)
return other;
ivar = is_ivar (objc_ivar_chain, id);
if (!ivar || is_private (ivar))
return other;
if (TREE_CODE (objc_method_context) == INSTANCE_METHOD_DECL
&& other && other != error_mark_node && !DECL_FILE_SCOPE_P (other))
{
warning ("local declaration of %qs hides instance variable",
IDENTIFIER_POINTER (id));
return other;
}
return build_ivar_reference (id);
}
#include "gt-objc-objc-act.h"